Question
You work in Human Resources at Merrill Lynch.You plan to survey employees to find their average medical expenses.You want to be 95% confident that the
You work in Human Resources at Merrill Lynch.You plan to survey employees to find their average medical expenses.You want to be 95% confident that the sample mean is within $60.A pilot study showed that Sx was about $420.What sample size do you use?
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Advanced Engineering Mathematics
Authors: ERWIN KREYSZIG
9th Edition
0471488852, 978-0471488859
