A simple random sample of 20 items resulted in a sample mean of 20. The population standard
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Question:
A simple random sample of 20 items resulted in a sample mean of 20. The population standard deviation is σ = 2. Round your answers to two decimal places.
a. What is the standard error of the mean, ?
b. At 95% confidence, what is the margin of error?
Related Book For
Essentials of Statistics for Business and Economics
ISBN: 978-1305081598
7th edition
Authors: David Anderson, Thomas Williams, Dennis Sweeney, Jeffrey Cam
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