Grand Canyon New Flavors of Ice Cream Non Parametric Exercise Paper
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A researcher is examining preferences among four new flavors of ice cream. A sample of n = 80 people is obtained. Each person tastes all four flavors and then picks a favorite. The distribution of preferences is as follows. Do these data indicate any significance preferences among the four flavors? Test at the .05 level of significance.
|
Ice Cream Flavor |
|||
|
A |
B |
C |
D |
|
12 |
18 |
28 |
22 |
Is it true that parametric tests are generally more powerful than nonparametric tests? If so, give two reasons why you might choose to use a nonparametric test instead of a parametric test.
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