Last Year,during an Investigation of the Time Spent Reading E-Mails $\alpha$

Multiple Choice

Last year,during an investigation of the time spent reading e-mails on a daily basis,researchers found that on Monday the average time was 50 minutes.Office workers claim that with the increased spam and junk mail,this time has now increased.To conduct a test,a sample of 25 employees is selected with the following results: sample mean = 51.05 minutes and sample standard deviation = 14.2 minutes.What is the critical value for $\alpha$ = .05 to test the hypotheses.

A) 1.711
B) 2.064
C) 2.060
D) 1.708
E) 1.645