In the EAI sampling problem, the population mean is $51,200 and the population standard deviation is $4,000.
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Question:
In the EAI sampling problem, the population mean is $51,200 and the population standard deviation is $4,000. When the sample size is n = 30, there is a 0.5878 probability of obtaining a sample mean within +/- $600 of the population mean.
A) What is the probability that the sample mean is within $600 of the population mean if a sample of size 60 is used (to 4 decimals)?
B) What is the probability that the sample mean is within $600 of the population mean if a sample of size 120 is used (to 4 decimals)?
Related Book For
Essentials of Modern Business Statistics with Microsoft Excel
ISBN: 978-0840062383
5th edition
Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
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