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Estimage the mean age of textbooks

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Reference no: EM131538046

Suppose that the minimum and maximum ages for typical textbooks currently used in college courses are 0 and 8 years. Use the range rule of thumb to estimate the standard deviation.

Standard deviation = 

Find the size of the sample required to estimage the mean age of textbooks currently used in college courses. Assume that you want 96% confidence that the sample mean is within 0.1 year of the population mean. Required sample size = 

Reference no: EM131538046

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