Mathematics, 13.04.2020 22:54 olgapagan3173

A researcher is interested in estimating the average salary of police officers in a large city. She wants to be 95% sure that her estimate is correct. If the standard deviation is $1050, how large a sample is needed to get the desired information and to be accurate within $200?
Z D/2 = 1.96

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A researcher is interested in estimating the average salary of police officers in a large city. She...