UNLV Math Worksheet

sections 7.51 and 7.61 are the main problems are the other two are the previous homework that have some wrong

need the answers and step by step on how you solve it

10/24/21, 8:21 PM
Quiz: Section 7.5
Section 7.5
Started: Oct 24 at 8:21pm
Quiz Instructions
Question 1
3 pts
Anne is taking courses in both mathematics and English. She estimates her
probability of passing mathematics at 0.42 and passing English at 0.47 , and
she estimates her probability of passing at least one of the courses at 0.7 . What is
the probability that Anne could pass both courses?
Note: Enter your final answer in the box below without rounding it.
Question 2
Given
of
P (E) =
3 pts
0.222 ,
0.463 ,
P (F ) =
P (E ∩ F ) =
0.198 , what is the value
P (E ∪ F ) =?
Note: Enter your answer in the box below without rounding it.
Question 3
https://unlv.instructure.com/courses/102986/quizzes/367193/take
3 pts
1/12
10/24/21, 8:21 PM
Quiz: Section 7.5
Suppose events
0.13
P (A) =
A
and
and
B
are mutually exclusive events in sample space
S.
If
¯
¯¯¯¯
¯¯¯¯
¯¯¯
¯
0.551, what is the value of
P (B) =
P (A ∪ B ) =?
Note: Enter your full answer in the box below without rounding it.
Question 4
3 pts
Determine the probability of event
E
if the odds against
E
are
3
to
11.
Note:For any final answer that has up to four decimal places, enter your answer
without rounding the number. For any answers with more than four decimal values,
round your final answer to four decimal places.
Question 5
Given P (E) =0.409 ,
of P (E ∩ F ) =?
3 pts
0.365 ,
P (F ) =
P (E ∪ F ) =
0.65 ,
what is the value
Note: Enter your answer in the box below without rounding it.
Question 6
https://unlv.instructure.com/courses/102986/quizzes/367193/take
3 pts
2/12
10/24/21, 8:21 PM
Quiz: Section 7.5
In the days he was still playing, Reggie Miller could score from the free-throw line 89
% of the time. Suppose he is playing in a game and he is fouled and has got to shoot
two. Assuming that the result of each free-throw is independent of the result of the
other free-throw, What is the probability that he will score on both shots?
Note: Please enter your answer in the box below without rounding it.
Question 7
Determine the probability of event
to 30.
3 pts
E
if the odds for (i.e., in favor of)
E
are
19
Note:For any final answer that has up to four decimal places, enter your answer
without rounding the number. For any answers with more than four decimal values,
round your final answer to four decimal places.
Question 8
3 pts
In the days he was still playing, Reggie Miller could score from the free-throw line 90
% of the time. Suppose he is playing in a game and he is fouled and has got to shoot
two. Assuming that the result of each free-throw is independent of the result of the
other free-throw, What is the probability that he will score at least one of the shots?
Note: Please enter your answer in the box below without rounding it.
https://unlv.instructure.com/courses/102986/quizzes/367193/take
3/12
10/24/21, 8:21 PM
Quiz: Section 7.5
Question 9
3 pts
Determine the probability of event
E
if the odds against
E
are
22
to
21.
Note:For any final answer that has up to four decimal places, enter your answer
without rounding the number. For any answers with more than four decimal values,
round your final answer to four decimal places.
Question 10
Given
3 pts
0.487
P (A) =
other words, what is
what is the probability of complement,
¯
¯
¯
¯
A
, of the event? In
¯
¯
¯
¯
P (A) =?
Note: Enter your answer in the box below without rounding it.
Question 11
Determine the probability of event
to
3 pts
E
if the odds for (i.e., in favor of)
E
are
27
20.
Note:For any final answer that has up to four decimal places, enter your answer
without rounding the number. For any answers with more than four decimal values,
round your final answer to four decimal places.
https://unlv.instructure.com/courses/102986/quizzes/367193/take
4/12
10/24/21, 8:21 PM
Quiz: Section 7.5
Question 12
Given,
P (E) =
3 pts
0.115 ,
P (E ∪ F ) =
0.379
,
P (E ∩ F ) =
0.291 ,
what is
P (F ) =?
Note: Enter your answer in the box below without rounding it.
Question 13
3 pts
Traffic engineers are investigating the high rate of fatal accidents at a lighted city
intersection. They discover that 27 % of the cars that are within 200 feet of the
intersection when the light turns red pass through the red light without stopping.
Suppose two cars are now within 200 feet of the intersection and the light turns red.
Assuming that drivers behave independently of one another, What is the probability
that both drivers pass through the red light without stopping? (Please do not round
your answer).
Question 14
3 pts
Traffic engineers are investigating the high rate of fatal accidents at a lighted city
intersection. They discover that 13 % of the cars that are within 200 feet of the
intersection when the light turns red pass through the red light without stopping.
Suppose two cars are now within 200 feet of the intersection and the light turns red.
https://unlv.instructure.com/courses/102986/quizzes/367193/take
5/12
10/24/21, 8:21 PM
Quiz: Section 7.5
Assuming that drivers behave independently of one another, What is the probability
that at least one of the drivers passes through the red light without stopping?
(Please do not round your answer).
Question 15
3 pts
The Chicago Bears football team has a probability of 0.24 to win the next game,
and a probability of 0.15 to tie the next game. What is the probability for the team
to lose the next game?
Note: Please enter your final answer in full without rounding it.
Question 16
2 pts
Given the following Venn diagram:
https://unlv.instructure.com/courses/102986/quizzes/367193/take
6/12
10/24/21, 8:21 PM
Quiz: Section 7.5
answer the following questions by filling in each box with the appropriate value.
a)
P (A ∪ C ) =
b)
P (B but not A) =
c)
P (C but not B) =
d)
P (A ∩ B ∩ C ) =
Question 17
2 pts
Given the following Venn diagram:
https://unlv.instructure.com/courses/102986/quizzes/367193/take
7/12
10/24/21, 8:21 PM
Quiz: Section 7.5
answer the following questions by filling in each box with the appropriate value.
a)
P (A ∪ B) =
b)
P (A ∩ B) =
c)
P (not A) =
d)
P (neither A nor B) =
Question 18
2 pts
Given the following Venn diagram:
https://unlv.instructure.com/courses/102986/quizzes/367193/take
8/12
10/24/21, 8:21 PM
Quiz: Section 7.5
answer the following questions by filling in each box with the appropriate value.
a)
P (A ∪ B ∪ C ) =
b)
P (B but not C ) =
c)
P (C but not A) =
d)
P (A ∩ B ∩ C ) =
Question 19
3 pts
If P (E) = 0.24 , then calculate and find that (enter one digit per box after
simplifying your numbers to the extent possible):
a) The odds for
E
b) The odds against
are:
E
to
are:
https://unlv.instructure.com/courses/102986/quizzes/367193/take
to
9/12
10/24/21, 8:21 PM
Quiz: Section 7.5
Question 20
3 pts
If P (E) = 0.88 , then calculate and find that (enter one digit per box after
simplifying your numbers to the extent possible):
a) The odds for
are:
E
b) The odds against
E
to
are:
to
Question 21
3 pts
If P (E) = 0.22 , then calculate and find that (enter one digit per box after
simplifying your numbers to the extent possible):
a) The odds for
are:
E
b) The odds against
E
to
are:
to
Question 22
If
P (E) = 0.7
3 pts
, then calculate and find that (enter one digit per box after
simplifying your numbers to the extent possible):
https://unlv.instructure.com/courses/102986/quizzes/367193/take
10/12
10/24/21, 8:21 PM
a) The odds for
Quiz: Section 7.5
are:
E
b) The odds against
E
to
are:
to
Question 23
Suppose events
4 pts
and F are independent, with
P (F ) = 0.72
and
P (E ∩ F ) = 0.288 . Calculate the following and enter your answers one digit per
box (Please simplify your numbers to the extent possible).
a) The odds for
E
E
b) The odds against
are:
E
to
are:
to
Question 24
Suppose events
4 pts
and F are independent, with
P (F ) = 0.63
and
P (E ∩ F ) = 0.2835 . Calculate the following and enter your answer one digit per
box (Please simplify your numbers to the extent possible).
a) The odds for
E
E
b) The odds against
are:
E
to
are:
https://unlv.instructure.com/courses/102986/quizzes/367193/take
to
11/12
10/24/21, 8:21 PM
Quiz: Section 7.5
Question 25
4 pts
Suppose events E and F are mutually exclusive, with
P (F ) = 0.54
and P (E ∪ F ) = 0.64 . Calculate the following and enter your answer one digit
per box (Please simplify your numbers to the extent possible).
a) The odds for
E
b) The odds against
are:
E
to
are:
to
Question 26
4 pts
Suppose events E and F are mutually exclusive, with
P (F ) = 0.60
and P (E ∪ F ) = 0.84 . Calculate the following and enter your answer one digit
per box (Please simplify your numbers to the extent possible).
a) The odds for
E
b) The odds against
are:
E
to
are:
to
Saving…
https://unlv.instructure.com/courses/102986/quizzes/367193/take
Submit Quiz
12/12
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
Section 7.5 Results for Nikelas Nguyen (He/Him)
Score for this attempt: 70.25 out of 79
Submitted Oct 24 at 8:20pm
This attempt took 6,090 minutes.
3 / 3 pts
Question 1
Given P (E)
is the value of
=
0.446 ,
0.316 ,
P (F ) =
P (E ∩ F ) =
0.283 , what
P (E ∪ F ) =?
Note: Enter your answer in the box below without rounding it.
Correct!
orrect Answer
0.479
0.479
3 / 3 pts
Question 2
The Chicago Bears football team has a probability of 0.52
to win the
next game, and a probability of 0.14 to tie the next game. What is the
probability for the team to lose the next game?
Note: Please enter your final answer in full without rounding it.
Correct!
orrect Answer
0.34
0.34
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
1/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
3 / 3 pts
Question 3
Given
P (E) =
0.415 ,
what is the value of
0.376 ,
P (F ) =
P (E ∪ F ) =
0.652 ,
P (E ∩ F ) =?
Note: Enter your answer in the box below without rounding it.
Correct!
orrect Answer
0.139
0.139
Question 4
3 / 3 pts
Traffic engineers are investigating the high rate of fatal accidents at a
lighted city intersection. They discover that 9 % of the cars that are
within 200 feet of the intersection when the light turns red pass through
the red light without stopping. Suppose two cars are now within 200 feet
of the intersection and the light turns red. Assuming that drivers behave
independently of one another, What is the probability that both drivers
pass through the red light without stopping? (Please do not round your
answer).
Correct!
orrect Answer
0.0081
0.0081
Question 5
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
3 / 3 pts
2/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
Given
0.436
P (A) =
what is the probability of complement,
the event? In other words, what is
¯
¯
¯
¯
, of
A
¯
¯
¯
¯
P (A) =?
Note: Enter your answer in the box below without rounding it.
Correct!
orrect Answer
0.564
0.564
3 / 3 pts
Question 6
Given, P (E) =0.134 ,
, what is P (F ) =?
P (E ∪ F ) =
0.458
,
P (E ∩ F ) =
0.065
Note: Enter your answer in the box below without rounding it.
Correct!
orrect Answer
0.389
0.389
Question 7
0 / 3 pts
In the days he was still playing, Reggie Miller could score from the freethrow line 86 % of the time. Suppose he is playing in a game and he is
fouled and has got to shoot two. Assuming that the result of each freethrow is independent of the result of the other free-throw, What is the
probability that he will score at least one of the shots?
Note: Please enter your answer in the box below without rounding it.
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
3/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
ou Answered
0.7396
orrect Answer
0.9804
3 / 3 pts
Question 8
Determine the probability of event
are
26
to
E
if the odds for (i.e., in favor of)
E
6.
Note:For any final answer that has up to four decimal places, enter your
answer without rounding the number. For any answers with more than
four decimal values, round your final answer to four decimal places.
Correct!
0.8125
orrect Answer
0.8125
3 / 3 pts
Question 9
Determine the probability of event
to
E
if the odds against
E
are
6
1.
Note:For any final answer that has up to four decimal places, enter your
answer without rounding the number. For any answers with more than
four decimal values, round your final answer to four decimal places.
Correct!
0.1429
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
4/18
10/24/21, 8:23 PM
orrect Answer
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
0.1429 margin of error +/- 0.0009
Question 10
3 / 3 pts
In the days he was still playing, Reggie Miller could score from the freethrow line 91 % of the time. Suppose he is playing in a game and he is
fouled and has got to shoot two. Assuming that the result of each freethrow is independent of the result of the other free-throw, What is the
probability that he will score on both shots?
Note: Please enter your answer in the box below without rounding it.
Correct!
orrect Answer
0.8281
0.8281
Question 11
0 / 3 pts
Anne is taking courses in both mathematics and English. She estimates
her probability of passing mathematics at 0.44 and passing English at
0.43 , and she estimates her probability of passing at least one of the
courses at 0.78 . What is the probability that Anne could pass both
courses?
Note: Enter your final answer in the box below without rounding it.
ou Answered
orrect Answer
0.005
0.09
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
5/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
3 / 3 pts
Question 12
Traffic engineers are investigating the high rate of fatal accidents at a
lighted city intersection. They discover that 23 % of the cars that are
within 200 feet of the intersection when the light turns red pass through
the red light without stopping. Suppose two cars are now within 200 feet
of the intersection and the light turns red. Assuming that drivers behave
independently of one another, What is the probability that at least one of
the drivers passes through the red light without stopping? (Please do
not round your answer).
Correct!
0.4071
orrect Answer
0.4071
3 / 3 pts
Question 13
Suppose events
space S . If P
of
and B are mutually exclusive events in sample
(A) =0.164
and P (B) =0.138, what is the value
A
¯
¯¯¯¯
¯¯¯¯
¯¯¯
¯
P (A ∪ B ) =?
Note: Enter your full answer in the box below without rounding it.
Correct!
orrect Answer
0.698
0.698
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
6/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
3 / 3 pts
Question 14
Determine the probability of event
are 24 to 22.
E
if the odds for (i.e., in favor of)
E
Note:For any final answer that has up to four decimal places, enter your
answer without rounding the number. For any answers with more than
four decimal values, round your final answer to four decimal places.
Correct!
orrect Answer
0.5217
0.5217
3 / 3 pts
Question 15
Determine the probability of event
to 18.
E
if the odds against
E
are
23
Note:For any final answer that has up to four decimal places, enter your
answer without rounding the number. For any answers with more than
four decimal values, round your final answer to four decimal places.
Correct!
orrect Answer
0.439
0.439 margin of error +/- 0.0009
Question 16
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
1.5 / 2 pts
7/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
Given the following Venn diagram:
answer the following questions by filling in each box with the appropriate
value.
0.91
a)
P (A ∪ B) =
b)
P (A but not B) =
0.37
c)
P (B but not C ) =
0.3
d)
P (neither A
nor
B nor C ) =
0.09
Answer 1:
ou Answered
0.91
orrect Answer
0.77
orrect Answer
.77
Answer 2:
Correct!
0.37
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
8/18
10/24/21, 8:23 PM
orrect Answer
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
.37
Answer 3:
Correct!
0.3
orrect Answer
0.30
orrect Answer
.30
orrect Answer
.3
Answer 4:
Correct!
orrect Answer
0.09
.09
Question 17
2 / 2 pts
Given the following Venn diagram:
answer the following questions by filling in each box with the appropriate
value.
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
9/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
0.8
a)
P (A ∪ C ) =
b)
P (C but not A) =
0.41
c)
P (B but not C ) =
0.19
d)
P (neither B
nor C ) =
0.24
Answer 1:
Correct!
0.8
orrect Answer
0.80
orrect Answer
.80
orrect Answer
.8
Answer 2:
Correct!
orrect Answer
0.41
.41
Answer 3:
Correct!
orrect Answer
0.19
.19
Answer 4:
Correct!
orrect Answer
0.24
.24
Question 18
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
0.5 / 2 pts
10/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
Given the following Venn diagram:
answer the following questions by filling in each box with the appropriate
value.
a)
P (A ∪ B) =
0.51
b)
P (A ∩ B) =
0.14
c)
P (B but not A) =
d)
P (not B) =
0.21
0.37
Answer 1:
ou Answered
0.51
orrect Answer
0.79
orrect Answer
.79
Answer 2:
Correct!
orrect Answer
0.14
.14
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
11/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
Answer 3:
ou Answered
0.21
orrect Answer
0.35
orrect Answer
.35
Answer 4:
ou Answered
0.37
orrect Answer
0.51
orrect Answer
.51
3 / 3 pts
Question 19
If P (E) = 0.75 , then calculate and find that (enter one digit per
box after simplifying your numbers to the extent possible):
a) The odds for
E
b) The odds against
are: 3
E
are:
to
1
1
to
3
Answer 1:
Correct!
3
Answer 2:
Correct!
1
Answer 3:
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
12/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
Correct!
1
Answer 4:
Correct!
3
2.25 / 3 pts
Question 20
If P (E) = 0.95 , then calculate and find that (enter one digit per
box after simplifying your numbers to the extent possible):
a) The odds for
E
b) The odds against
are: 19
E
are:
to
1
1
to
20
Answer 1:
Correct!
19
Answer 2:
Correct!
1
Answer 3:
Correct!
1
Answer 4:
ou Answered
20
orrect Answer
19
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
13/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
3 / 3 pts
Question 21
If P (E) = 0.3 , then calculate and find that (enter one digit per box
after simplifying your numbers to the extent possible):
a) The odds for
E
b) The odds against
are: 3
E
are:
to
7
7
to
3
Answer 1:
Correct!
3
Answer 2:
Correct!
7
Answer 3:
Correct!
7
Answer 4:
Correct!
3
3 / 3 pts
Question 22
If
P (E) = 0.36
, then calculate and find that (enter one digit per
box after simplifying your numbers to the extent possible):
a) The odds for
E
are: 9
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
to
16
14/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
b) The odds against
E
are:
16
to
9
Answer 1:
Correct!
9
Answer 2:
Correct!
16
Answer 3:
Correct!
16
Answer 4:
Correct!
9
4 / 4 pts
Question 23
Suppose events
E
and
F
are independent, with
and P (E ∩ F ) = 0.0672 . Calculate the following and
enter your answer one digit per box (Please simplify your numbers to
the extent possible).
P (F ) = 0.42
a) The odds for
E
b) The odds against
are: 4
E
are: 21
to
21
to
4
Answer 1:
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
15/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
Correct!
4
Answer 2:
Correct!
21
Answer 3:
Correct!
21
Answer 4:
Correct!
4
4 / 4 pts
Question 24
Suppose events
are independent, with
P (F ) = 0.48
and P (E ∩ F ) = 0.1248 . Calculate the following and
enter your answer one digit per box (Please simplify your numbers to
E
and
F
the extent possible).
a) The odds for
E
b) The odds against
are: 13
E
are: 37
to
37
to
13
Answer 1:
Correct!
13
Answer 2:
Correct!
37
Answer 3:
Correct!
37
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
16/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
Answer 4:
Correct!
13
4 / 4 pts
Question 25
Suppose events
are mutually exclusive, with
P (F ) = 0.10
and P (E ∪ F ) = 0.82 . Calculate the following and
enter your answer one digit per box (Please simplify your numbers to
the extent possible).
a) The odds for
E
E
b) The odds against
and
F
are: 18
E
are: 7
to
7
to
18
Answer 1:
Correct!
18
Answer 2:
Correct!
7
Answer 3:
Correct!
7
Answer 4:
Correct!
18
Question 26
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
4 / 4 pts
17/18
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.5
Suppose events
E
and
F
are mutually exclusive, with
and P (E ∪ F ) = 0.64 . Calculate the following and
enter your answer one digit per box (Please simplify your numbers to
the extent possible).
P (F ) = 0.54
a) The odds for
E
b) The odds against
are: 1
E
are: 9
to
9
to
1
Answer 1:
Correct!
1
Answer 2:
Correct!
9
Answer 3:
Correct!
9
Answer 4:
Correct!
1
Quiz Score: 70.25 out of 79
https://unlv.instructure.com/courses/102986/quizzes/367193/history?version=1
18/18
10/24/21, 8:04 PM
Quiz: Section 7.6
Section 7.6
Started: Oct 24 at 8:04pm
Quiz Instructions
Question 1
4 pts
A construction contractor is considering to bid on completing a project that promises
a profit of $31,982 with a probability of 0.6 , or a loss (due to bad weather, worker
strikes, etc.) of $15,066 with a probability that is the complement probability of
making a profit. What is the expected profit for the contractor?
Note: Please avoid rounding numbers in the middle of your calculations. However,
round your final answer to two decimal places, (such as 80.76 or 1200.34, and so
on) before entering it in the box below. There is no need to enter the $ symbol in the
answer box.
Question 2
4 pts
Juanita pays $7 to purchase one raffle ticket in the hopes of winning a new car
valued at $17,708. There are 1,906 tickets sold. Using the expected value of a
ticket, calculate the expected gain or loss to Juanita.
Note: Please avoid rounding numbers in the middle of your calculations. However,
round your final answer to two decimal places, before entering it in the box below. A
negative expected value indicates an expected loss for Juanita.
https://unlv.instructure.com/courses/102986/quizzes/367190/take
1/4
10/24/21, 8:04 PM
Quiz: Section 7.6
Question 3
4 pts
A company makes electronic gadgets. One out of every 50 gadgets is faulty, but the
company doesn’t know which ones are faulty until a buyer complains. Suppose the
company makes a $3 profit on the sale of any working gadget, but suffers a loss of
for every faulty gadget because they have to repair the unit. What is the
expected profit or loss for every batch of 50 gadgets sold? (Round your final answer
to two decimal places and select the most accurate option from below).
$80
An expected loss of $2.25
An expected loss of $3.25
An expected loss of $2.65
An expected profit of $0.87
Correct answer is not listed
An expected profit of $5.80
An expected profit of
$1.34
An expected profit of $6.23
Question 4
4 pts
A company makes electronic gadgets. One out of every 20 gadgets is faulty, but the
company doesn’t know which ones are faulty until a buyer complains. Suppose the
company makes a $8 profit on the sale of any working gadget, but suffers a loss of
$200 for every faulty gadget because they have to repair the unit. What is the
expected profit or loss for every batch of 20 gadgets sold? (Round your final answer
to two decimal places and select the most accurate option from below).
An expected profit of $1.95
An expected profit of $7.14
An expected loss of $6.52
https://unlv.instructure.com/courses/102986/quizzes/367190/take
2/4
10/24/21, 8:04 PM
Quiz: Section 7.6
An expected loss of $12.48
An expected profit of $5.10
An expected loss of $3.85
The correct answer is not listed
An expected loss of $2.40
Question 5
4 pts
In a certain game, suppose there is no cost to playing the game, and a player has a
probability 0.09 of winning a prize worth $1,574 , and a probability of 0.28
of winning another prize worth $90 . What is the expected payment of playing the
game? (please do not round your final answer, and enter it in the box provided below
as is).
Question 6
4 pts
A company makes electronic gadgets. One out of every 40 gadgets is faulty, but the
company doesn’t know which ones are faulty until a buyer complains. Suppose the
company makes a $2 profit on the sale of any working gadget, but suffers a loss of
$35 for every faulty gadget because they have to repair the unit. What is the
expected profit or loss for every batch of 40 gadgets sold? (Round your final answer
to two decimal places and select the most accurate option from below).
An expected loss of $8.14
Correct answer is not listed
An expected profit of $0.84
An expected profit of $4.63
https://unlv.instructure.com/courses/102986/quizzes/367190/take
3/4
10/24/21, 8:04 PM
Quiz: Section 7.6
An expected loss of $3.65
An expected profit of $25
An expected profit of $1.08
An expected loss of $7.12
Not saved
https://unlv.instructure.com/courses/102986/quizzes/367190/take
Submit Quiz
4/4
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.6
Section 7.6 Results for Nikelas Nguyen (He/Him)
Score for this attempt: 20 out of 24
Submitted Oct 24 at 8:03pm
This attempt took 6,075 minutes.
Question 1
4 / 4 pts
Allison purchases one lottery raffle ticket for a school fundraiser. The raffle
ticket cost $11. The school is selling 20,567 tickets. One ticket will be
randomly drawn and the winner will receive $65,666. Assuming all of
the tickets are sold, and using the expected value of a ticket, compute the
expected gain or loss for Allison.
Note: Please avoid rounding numbers in the middle of your calculations.
However, round your final answer to two decimal places, before entering it
in the box below. A negative final answer indicates an expected loss to
Allison for playing the lottery raffle.
Correct!
orrect Answer
-7.81
-7.81 margin of error +/- 0.05
Question 2
A company makes electronic gadgets. One out of every
4 / 4 pts
gadgets is
faulty, but the company doesn’t know which ones are faulty until a buyer
complains. Suppose the company makes a
profit on the sale of any
working gadget, but suffers a loss of
for every faulty gadget because
they have to repair the unit. What is the expected profit or loss for every
batch of
gadgets sold? (Round your final answer to two decimal
places and select the most accurate option from below).
Loading [MathJax]/extensions/Safe.js
https://unlv.instructure.com/courses/102986/quizzes/367190/history?version=1
1/5
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.6
An expected loss of
An expected loss of
An expected profit of
Correct answer is not listed
An expected profit of
An expected profit of
Correct!
An expected profit of
An expected loss of
Question 3
4 / 4 pts
Amita pays $0.56 to play a game at a local fair that involves receiving
the number of quarters that corresponds to the number that comes up on
the roll of a die. Using the expected value of the game, compute the
expected gain or loss for Amita.
Note: Please avoid rounding numbers in the middle of your calculations.
However, round your final answer to two decimal places, before entering it
in the box below. A negative final answer indicates an expected loss for
Amita for playing the game.
Correct!
orrect Answer
0.32
0.31 margin of error +/- 0.01
Loading [MathJax]/extensions/Safe.js
https://unlv.instructure.com/courses/102986/quizzes/367190/history?version=1
2/5
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.6
Question 4
0 / 4 pts
A construction contractor is considering to bid on completing a project that
promises a profit of 24,239 with a probability of 0.79 , or a loss (due to
bad weather, worker strikes, etc.) of 5,133 with a probability that is the
complement probability of making a profit. What is the expected profit for
the contractor?
Note: Please avoid rounding numbers in the middle of your calculations.
However, round your final answer to two decimal places, (such as 80.76
or 1200.34, and so on) before entering it in the box below. There is no
need to enter the symbol in the answer box.
ou Answered
orrect Answer
20,226.74
18,070.88 margin of error +/- 0.05
Question 5
4 / 4 pts
A company makes electronic gadgets. One out of every
gadgets is
faulty, but the company doesn’t know which ones are faulty until a buyer
complains. Suppose the company makes a
profit on the sale of any
working gadget, but suffers a loss of
for every faulty gadget because
they have to repair the unit. What is the expected profit or loss for every
batch of
gadgets sold? (Round your final answer to two decimal
places and select the most accurate option from below).
An expected loss of
An expected profit of
Correct!
An expected profit of
Loading [MathJax]/extensions/Safe.js
https://unlv.instructure.com/courses/102986/quizzes/367190/history?version=1
3/5
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.6
An expected loss of
An expected profit of
Correct answer is not listed
An expected profit of
An expected loss of
Question 6
A 37 year old man in the United States has a 0.191%
4 / 4 pts
risk of dying
during the next year. An insurance company charges a premium of $392
for a life insurance policy that pays a $192,808 death benefit. What is
the expected gain or loss to the man when purchasing the insurance
policy?
Hint: Calculate the expected loss of the premium if the man survives
(always a negative value), then calculate the expected gain to the
beneficiaries if the man dies (always a positive value), and then add these
two numbers to find the net result. A negative net result should be entered
as a negative value in the box below.
Note: Please avoid rounding numbers in the middle of your calculations.
However, round your final answer to two decimal places, before entering it
in the box below. A negative final answer indicates an expected loss for
purchasing the policy.
Correct!
orrect Answer
-23.74
-23.74 margin of error +/- 0.04
Loading [MathJax]/extensions/Safe.js
https://unlv.instructure.com/courses/102986/quizzes/367190/history?version=1
4/5
10/24/21, 8:23 PM
Nikelas Nguyen (He/Him)’s Quiz History: Section 7.6
Quiz Score: 20 out of 24
Loading [MathJax]/extensions/Safe.js
https://unlv.instructure.com/courses/102986/quizzes/367190/history?version=1
5/5
912.
P(E)= 0.115
PEDE) = 6.379
PENA = 0.291
–
– P(F) =
PLE) – P(EUA)- PIENP)
-0.555
e
P(F) = 0.555