Confidence interval for the true population mean

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You measure 32 textbooks' weights, and find they have a mean weight of 70 ounces. Assume the population standard deviation is 3.2 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight. Use z = 2 (rather than 1.96) for your calculations.

Give your answers as decimals, to two places

Reference no: EM132404105

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