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Online You measure 21 textbooks' weights, and find they have a mean weight of 76 ounces. Assume the ent population standard deviation is 14.9 ounces.

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Online You measure 21 textbooks' weights, and find they have a mean weight of 76 ounces. Assume the ent population standard deviation is 14.9 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight. ment ce Give your answers as decimals, to two places

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