retail website by members of the website's premium program. A random sample of 90members of the website's premium program who recently made a purchase on the website yielded a mean of $1600 and a standard deviation of $350. Complete parts (a) and (b) below. a. Construct a 95% confidence interval estimate for the mean spending
retail website by members of the website's premium program. A random sample of 90members of the website's premium program who recently made a purchase on the website yielded a mean of $1600 and a standard deviation of $350. Complete parts (a) and (b) below. a. Construct a 95% confidence interval estimate for the mean spending
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A marketing researcher wants to estimate the mean amount spent ($) on a certain retail website by members of the website's premium program. A random sample of 90members of the website's premium program who recently made a purchase on the website yielded a mean of $1600 and a standard deviation of $350.
Complete parts (a) and (b) below.
Complete parts (a) and (b) below.
a. Construct a 95% confidence interval estimate for the mean spending for all shoppers who are members of the website's premium program.
enter your response here ___ ≤μ≤ ___ enter your response here
(Round to two decimal places as needed.)
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