Milk Consumption You are performing a study about weekly
Chapter 5, Problem 40E(choose chapter or problem)
Problem 40E
Milk Consumption You are performing a study about weekly per capita milk consumption. A previous study found weekly per capita milk consumption to be normally distributed, with a mean of 48.7 fluid ounces and a standard deviation of 8.6 fluid ounces. You randomly sample 30 people and record the weekly milk consumptions shown below.
40 |
45 |
54 |
41 |
43 |
31 |
47 |
30 |
33 |
37 |
48 |
57 |
52 |
45 |
38 |
65 |
25 |
39 |
53 |
51 |
58 |
52 |
40 |
46 |
44 |
48 |
61 |
47 |
49 |
57 |
(a) Draw a frequency histogram to display these data. Use seven classes. Do the consumptions appear to be normally distributed? Explain.
(b) Find the mean and standard deviation of your sample.
(c) Compare the mean and standard deviation of your sample with those of the previous study. Discuss the differences.
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