Find the size of the sample required to estimate the mean

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Reference no: EM13630431

Suppose that the minimum and maximum ages for typical textbooks currently used in college courses are 2 and 8 years. Use the following rule of thumb to estimate the standard deviation.

Standard deviation =

Rule of thumb : Standard Deviation is about {Max-Min}/{4}

Find the size of the sample required to estimate the mean age of textbooks currently used in college courses. Assume that you want 94% confidence that the sample mean is within 0.1 year of the population mean.

Reference no: EM13630431

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