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September 4, 2015

Homework Help: statistics

Posted by Janelle on Wednesday, November 9, 2011 at 9:21am.

A psychologist wants to estimate the variance of employee test scores. A random
sample of 18 scores had a sample standard deviation 10.4. Find a 90% confidence
2
interval for the population variance. What assumption, if any, have you made in calculating this interval estimate?

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