Mathematics, 05.05.2021 14:00 mem8163

A business school director wants to estimate the mean anual salaries 5 years after students graduate. A random sample of 25 graduates found a sample mean of $42,740.0 and a sample deviation of $4,780.0 Find a 90% confidence interval for the pupultaion mean, assuming that the population distribution is normal.

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A business school director wants to estimate the mean anual salaries 5 years after students graduate...