Solution-Find mean amount charged increases under the

Find mean amount charged increases under the no-fee offer

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Reference no: EM131639979

Question: Will they charge more? A bank wonders whether omitting the annual credit card fee for customers who charge at least $3000 in a year will increase the amount charged on its credit cards. The bank makes this offer to an SRS of 400 of its credit card customers. It then compares how much these customers charge this year with the amount that they charged last year. The mean increase in the sample is $246, and the standard deviation is $112. Is there significant evidence at the 1% level that the mean amount charged increases under the no-fee offer? State H0 and Ha and carry out a test.

2. Web-based exercise. Choose a major journal in your field of study. Use a Web search engine to find its Web site-just search on the journal's name. Find a paper that uses a phrase like "significant (P = 0.01)."

Reference no: EM131639979

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Find mean amount charged increases under the no-fee offer

Reference no: EM131639979

Reference no: EM131639979

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