Asked by Aailyah
A researcher studying salaries of police officers around the nation surveyed 64 officers and found a mean salary of $71,228 with a standard deviation of $7,425. Make a 99% confidence interval for the mean salary of all police officers.
Answers
Answered by
oobleck
You can play around with Z table stuff at
http://davidmlane.com/hyperstat/z_table.html
http://davidmlane.com/hyperstat/z_table.html
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