You measure 31 textbooks' weights, and find they have a mean weight of 66 ounces. Assume the population standard deviation is 6.9 ounces. Based on this, construct a 90% confidence interval for the...

You measure 31 textbooks' weights, and find they have a mean weight of 66 ounces. Assume the population standard deviation is 6.9 ounces. Based on this, construct a 90% confidence interval for the true population mean textbook weight.


Report your answers to three decimal places.



Confidence Interval



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