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Question 19 You measure 22 randomly selected textbooks' weights, and find they have a mean weight of 49 ounces. Assume the population standard deviation is

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Question 19 You measure 22 randomly selected textbooks' weights, and find they have a mean weight of 49 ounces. Assume the population standard deviation is 12.2 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight. Give your answers as decimals, to two places KINGDO Add Work Check

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