State the null and alternate hypotheses

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Ditaplex, promise that their average bill for identical items will not be less at any other retailer". In order to keep its promise, they constantly compares the average prices to those of a major competition; Johnbull. In a recent study, using a one-week shopping plan (grocery and health and beauty products), identical purchases were made at 100 randomly selected Ditaplex stores and Johnbull Stores during a single week.

Based on this study, does Ditaplex deliver the promise that shoppers on average will not pay less at other retailers?

a. State the null and alternate Hypotheses.

b. What is the p-value?

c. Do you reject the null hypothesis at 0.05 level of significance?

d. Do you reject the null hypothesis at 0.01 level of significance?

Reference no: EM132409371

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