UNC Charlotte Math Standard Derivation Exercises

Hi, I have a 5 multi-questions lab I’m needing assistance with. I will upload on a pdf

Question 17 (4 points)
Provided below are the sizes of 15 farms in acres, randomly selected from the state
of Oregon. Find the mean area for these 15 farms
1.920 149 252 494 485 425 184 385
345 85 114 507 255 252 432
419 acres
252 acres
345 acres
10 res
Question 18 14 point
Refer to the sample space table below. What wethods in favor of rolling a single
obom with a rol of twoice What we the odds
1
1
3
222222
5
SSSSS
ARABEO
Ostave 65
Om to 5:15
in 1551
Question 19 (4 points)
Suppose that the result of a public opinion poll shows that just 10% of people would
be willing to give up their cell phone for 1 week in exchange for $100. How many
people would need to be surveyed in order to have a margin of error of +2%?
900 people
1,125 people
675 people
450 people
Question 20 (4 points
The children at a certain school were asked what they prefer to drink with their
lunch, and the following table summarizes the children’s responses
Duik
Percentage
46
milk chocolate milk 26
w
13
5
her
10
The school only serves milk, chocolate milk, or water with lunch. What is the
probability that the first student in line for lunch will be served their preferred
beverage with their lunch?
0.39
0.61
0.51
0.49
Question 5 (4 points)
Assume a data set is normally distributed with mean 13 and standard deviation 3.5.
If the data set contains 50 data values, approximately how many of the data values
will fall within the range 9.5 to 16.5?
3415
34.1%
0.15
13.6%
015
X-2
X
X
X
X+21
X+30
34
9
12
о
48