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Confidence interval for the population mean

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A pediatrician measured the heights of 20 randomly selected 6-year old girls. The average height for these 6-year olds is (x bar) ¯x = 44.85 inches with a standard deviation s = 3.39 inches. Assume that the distribution of heights of all 6-years old is approximately normally distributed. Find the 90% confidence interval for the population mean of µ of all 6-years old girls and the Margin of error?

Reference no: EM132414131

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