Mathematics
Mathematics, 18.01.2021 14:00, pleasedontspamme

A researcher reports survey results by stating that the standard error of the mean is 25 the population standard deviation is 400. Use z-table. a. How large was the sample used in this survey?
b. What is the probability that the point estimate was within Ā±15 of the population mean?

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A researcher reports survey results by stating that the standard error of the mean is 25 the populat...

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