Store AStore B Do consumers spend more on a trip to Store A or Store B? Suppose

Question

Store AStore B Do consumers spend more on a trip to Store A or Store B? Suppose researchers interested in this question collected a systematic sample from 82 Store A customers and 81 Store B customers by asking customers for their purchase amount as they left the stores. The data collected is summarized by the accompanying table. Suppose researchers decide to test the hypothesis that the means are equal. The degrees of freedom formula gives 160.76 df. Test the null hypothesis at ?-0.01 82 45 20 81 50 19 ldentify the null and alternative hypotheses. Choose the correct answer below. Compute the test statistic. t- (Round to two decimal places as needed.)

Explanation / Answer

t = ( x1 - x2)/sqrt(s1^2/n1 + s2^2/n2)
= ( 45 - 50)/sqrt(20^2/82 + 19^2/81)
= -1.64

p value = .1029

Do not reject the null hypothesis

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