Suppose that textbook weights are normally distributed. You measure 50 textbooks' weights, and find they have a mean weight of 47 ounces. Assume the population standard deviation is 7.4 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight. Round answers to 2 decimal places. 90 x < μ 1.645 X

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Suppose that textbook weights are normally distributed. You measure 50 textbooks' weights, and find they
have a mean weight of 47 ounces. Assume the population standard deviation is 7.4 ounces. Based on this,
construct a 95% confidence interval for the true population mean textbook weight. Round answers to 2
decimal places.
90
X< μ
< 1.645
X
Transcribed Image Text:Suppose that textbook weights are normally distributed. You measure 50 textbooks' weights, and find they have a mean weight of 47 ounces. Assume the population standard deviation is 7.4 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight. Round answers to 2 decimal places. 90 X< μ < 1.645 X
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