Mathematics, 25.02.2021 04:00 ssargeant2559

A random sample of 40 business days from the past year was taken from the store records. For each day, the net income was determined. The sample standard
deviation was found to be $57.19. How many MORE business days should be
included in the sample to be 95% confident that the sample mean i of daily net
incomes is within $10 of the population mean p of daily net incomes?

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