A large metropolitan bank has analyzed the amount of time required to process home loans and determined that the times follow a normal distribution with mean time = 45 hours. The bank's operations manager has developed a new procedure for processing the loans that involves extensive use of new computer software. He believes that the new procedure will decrease the population mean amount of time required to process home loans. After training a group of loan officers, a random sample of 25 loan applications will be selected and the average amount of time required to process the loans will be determined. If the switch is made to the new procedure, the cost of the additional software will be more than offset by the savings in manpower required to process the loans. Use the hypotheses Ho: 45 hours and Ha: < 45 hours.

If the sample mean amount of time is= 43.118 hours with the sample standard deviations= 5.5 hours, give the appropriate conclusion, for = .025.

• A.Do not reject H0, do not switch to the new procedure.
• B.Reject H0, switch to the new procedure.
• C.Reject H0, do not switch to the new procedure.
• D.Do not reject H0, switch to the new procedure.