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September 19, 2014

Homework Help: statistics

Posted by Lynn on Wednesday, June 13, 2012 at 8:38pm.

A purchasing agent wants to estimate the mean daily usage of rye flour. She takes a sample for 50 straight days and find that the sample mean is 180 lbs with a sample standard deviation of 38.5 lbs. a)State the 90% confidence interval for the mean.b) State the margin of error

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