An e-marketing consultant is hired to determine how long customers spend, on average, on a company's website. If the standard deviation is known from previous studies to be approximately 5 minutes, determine the number of customers that needs to be sampled in order to determine the mean length of time spent on the company's website, accurate to within a margin of error of 0.8 minutes, at the 5% level of significance. Standard Normal Distribution Table Number of Customers = Round up to the next whole number

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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An e-marketing consultant is hired to determine how long customers spend, on
average, on a company's website. If the standard deviation is known from previous
studies to be approximately 5 minutes, determine the number of customers that
needs to be sampled in order to determine the mean length of time spent on the
company's website, accurate to within a margin of error of 0.8 minutes, at the 5%
level of significance.
Standard Normal Distribution Table
Number of Customers =
Round up to the next whole number
Transcribed Image Text:An e-marketing consultant is hired to determine how long customers spend, on average, on a company's website. If the standard deviation is known from previous studies to be approximately 5 minutes, determine the number of customers that needs to be sampled in order to determine the mean length of time spent on the company's website, accurate to within a margin of error of 0.8 minutes, at the 5% level of significance. Standard Normal Distribution Table Number of Customers = Round up to the next whole number
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