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A marketing researcher wants to estimate the mean amount spent​ ($) on a certain retail website...

A marketing researcher wants to estimate the mean amount spent​ ($) on a certain retail website by members of the​ website's premium program. A random sample of

95 members of the​ website's premium program who recently made a purchase on the website yielded a mean of ​$2000 and a standard deviation of ​$150.

Complete parts​ (a) and​ (b) below.

A ___ < U < ____

b. Interpret the interval constructed in​ (a).

Choose the correct answer below.

A.The sample mean spending in 90​% of all samples of 95 members of the​ website's premium program will be between the lower and upper limits of the confidence interval.

B.With 90​% ​confidence, the mean spending in dollars for all shoppers who are members of the​ website's premium program is between the lower and upper limits of the confidence interval.

C. 90​% of all shoppers who are members of the​ website's premium program have spent an amount in dollars that is between the lower and upper limits of the confidence interval.

D.There is a 90​% probability that mean spending in dollars for all shoppers who are members of the​ website's premium program is between the lower and upper limits of the confidence interval.

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