SOLUTION: You measure 42 randomly selected textbooks' weights, and find they have a mean weight of 52 ounces. Assume the population standard deviation is 14.8 ounces. Based on this, construc

Question 1180592: You measure 42 randomly selected textbooks' weights, and find they have a mean weight of 52 ounces. Assume the population standard deviation is 14.8 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight.
Give your answers as decimals, to two places
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
99% CI half-interval is z*(0.995)*sigma/sqrt(n)
=2.576*14.8/sqrt(42)
=5.88
that is added to and subtracted from the mean
(46.12, 57.88) units oz.
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