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July 4, 2015

Homework Help: math

Posted by mayra on Saturday, November 19, 2011 at 3:49pm.

Suppose that an accounting firm does a study to determine the time needed to complete one person's tax forms. It randomly surveys 100 people. The sample average is 23.8 hours. There is a known population standard deviation of 6.0 hours. The population distribution is assumed to be normal.

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