A department store has determined that, in the past, the mean amount spent by ea

Question

A department store has determined that, in the past, the mean amount spent by each shopper is no more than $100. A newly hired store manager claims that the mean is now higher and wants to change the marketing scheme accordingly. A group of 27 shoppers is chosen at random and found to have spent a mean of $104.93, with a standard deviation of $9.07. Assume that the population distribution is approximately normal and test the manager's claim at the 0.05 level of significance. Step 3 of 3: The p-value of this test is approximately p = .0045. What should be the conclusion?

Explanation / Answer

The p-value is less than level of significance so reject the null hypothesis

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