A survey of 36 randomly selected iPhone owners showed that the purchase price has a mean of
Question:
A survey of 36 randomly selected iPhone owners showed that the purchase price has a mean of $650 with a sample standard deviation of $24.
a. Compute the standard error of the sample mean.
b. Compute the 95% confidence interval for the mean.
c. How large a sample is needed to estimate the population mean within $10?
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a 4 found by 2436 b ...View the full answer
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Related Book For 
Statistical Techniques in Business and Economics
ISBN: 978-1259666360
17th edition
Authors: Douglas A. Lind, William G Marchal
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