Business, 11.02.2021 22:10, maay101

A marketing researcher wants to estimate the mean amount spent (S) on Amazon. com by Amazon Prime member shoppers. Suppose a random sample of 100 Amazon Prime member shoppers who recently made a purchase on Amazon. com yielded a mean of $1,500. a. Suppose the standard deviation of the amount spent ($) on Amazon. com is $200. Construct a 95% confidence interval estimate for the mean spending for all Amazon Prime member shoppers.
b. Suppose the standard deviation of the sample of 100 Amazon Prime member shoppers is $200. Construct a 95% confidence interval estimate for the mean spending for all Amazon Prime member shoppers.

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A marketing researcher wants to estimate the mean amount spent (S) on Amazon. com by Amazon Prime me...