Question: A professional employee in a large corporation receives an average of

Question

Question: A professional employee in a large corporation receives an average of 41 5 emais per day. Most of these emails are from other employees in the company Because of the large number of emails, 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 email, One month after the new priority list was put into place, a random sample of 37 employees showed that they were receiving an average of x 338 emails per day The computer server through which the emails are routed showed that -19 5 Has the new policy had any effect? Use a 10% level of significance to test the claim that there has been a change (either way) in the average number of emails received per day per employee. What is the level of significance?

Explanation / Answer

x = 33.8

n = 37

= 41.5

= 19.5

Z = (x-)//sqrt (n) = (33.8-41.5)/19.5/sqrt(37) = -7.7/3.205 = -2.4

P-value = P(Z>2.4) + P(Z<-2.4) = 2*0.082 = 0.164

= 0.1

P>

Cannot reject null

No significant affect by the priority list implementation

Hope this helps :)

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