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A consultant performs a survey with the following results:

1.   A consultant performs a survey with the following results:

Brand/Satisfied YES NO

A 52 28

B 33 19

                                                      

The consultant wishes to determine if there is a significant difference between brands in the proportion of satisfied customers. Perform a  level hypothesis test for the difference of proportions.  What are the sample proportions for each brand?

 What are the null and research hypotheses? What is the test statistic and p-value?  What is the statistical decision? Justify your answer. What is the conclusion? Determine a 95% CI for the difference in proportions.

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What are the sample proportions for each brand Brand A = 0.65 Brand B = 0.6346 What are the null and research hypotheses H0:... View the full answer

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