SOLUTION: #1
You measure 28 textbooks' weights, and find they have a mean weight of 41 ounces. Assume the population standard deviation is 11.9 ounces. Based on this, construct a 99% confid
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You measure 28 textbooks' weights, and find they have a mean weight of 41 ounces. Assume the population standard deviation is 11.9 ounces. Based on this, construct a 99% confid
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Question 1120223: #1
You measure 28 textbooks' weights, and find they have a mean weight of 41 ounces. Assume the population standard deviation is 11.9 ounces. Based on this, construct a 99% confidence interval for the true population mean textbook weight.
Give your answers as decimals, to two places
_____< μ < _____ Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! The half-interval is z(0.995)*sigma/sqrt(n)
=2.576*11.9/sqrt(28)
=5.79
This is added and subtracted to the mean, so the interval is (35.21 oz, 46.79 oz.)
