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April 19, 2014

Homework Help: statistics

Posted by Anonymous on Wednesday, February 27, 2013 at 9:35am.

A professional employee in a large corporation receives an average of = 45 e-mails per day. Most of these e-mails are from other employees in the company. Because of the large number of e-mails, employees find themselves distracted and are unable to concentrate when they return to their tasks. In an effort to reduce distraction caused by such interruptions, one company established a priority list that all employees were to use before sending an e-mail. One month after the new priority list was put into place, a random sample of 50 employees showed that they were receiving an average of = 39.1 e-mails per day. The computer server through which the e-mails are routed showed that = 18.5. Has the new policy had any effect? Use a 5% level of significance to test the claim that there has been a change (either way) in the average number of e-mails received per day per employee. Find (or estimate) the P-value.

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