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In: Statistics and Probability

Problem 1: The same group of people rated both brands of coffee. Half of the subjects...

Problem 1: The same group of people rated both brands of coffee. Half of the subjects tasted brand A first. Half of the subjects tasted brand B first.  

Subject. coffee a. coffee b

1 8 6

2 8 7

3 6 7

4 7 5

5 6 5

6 8 7

7 8 8

8 5 6

9 8 7   

10 6 5

Is there a difference in the mean ratings between the two brands of coffee (use an alpha .05)?

You must use all five steps in hypothesis testing:

  1. Restate the question as a research hypothesis and a null hypothesis about the populations.
  2. Determine the characteristics of the comparison distribution.
  3. Determine the cutoff sample score on the comparison distribution at which the null hypothesis should be rejected.
  4. Determine your sample’s score on the comparison distribution.
  5. Decide whether to reject the null hypothesis.

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orchestra answered 2 years ago
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