Question
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
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 4.1 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 2% level of significance.
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Elementary Statistics In Social Research Essentials
Authors: Jack A. Levin, James Alan Fox
3rd Edition
0205638007, 978-0205638000
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