Mathematics, 10.06.2021 20:40 valerieaj113
A bank wonders whether omitting the annual credit card fee for customers who charge at least $3,000 in a year would increase the amount charged on their credit card. The bank makes an offer to an SRS of 500 existing credit card customers. It then compares how much these customers charge this year with the amount they charges last year. The mean increase is $565, and the standard deviation is $267. Give a 95% confidence interval for the mean amount of the increase. Interpret your answer in simple English.
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A bank wonders whether omitting the annual credit card fee for customers who charge at least $3,000...
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