Question

An online retailer believes that Canadian Internet users spend an average of $725 shopping online annually. A survey of 2,711 Canadian Internet users reports average spending of $641, with a standard deviation of $234. You may assume that the sample data are normally distributed. At the 5% level of significance, is there evidence that annual Internet spending by Canadians is lower than the online retailer believes? How sure of your answer are you?


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  • CreatedJuly 12, 2015
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