Question: Grocery prices of the same items were compared at Target

Grocery prices of the same items were compared at Target and Whole Foods. Assume the sampling was random. The descriptive statistics are shown, and the results of a t-test are shown.
a. Compare the sample means descriptively.
b. Perform a hypothesis test to determine whether the means are significantly different using an alpha of 0.05.
c. If you were to find a 95% confidence interval for the mean difference, would it capture 0? Explain.

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  • CreatedJuly 16, 2015
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