James Desreumaux, VP of Human Resources of Maritime Boat Manufacturing

Multiple Choice

James Desreumaux, VP of Human Resources of Maritime Boat Manufacturing (MBM) , is reviewing the employee training programs of MBM factories.His staff randomly selected personnel files for 100 workers in New Brunswick and determined that their mean training time was 25 hours.Assume that the population standard deviation is 5 hours.The 88% confidence interval for the population mean of training times is ___.

A) 17.25 to 32.75
B) 24.23 to 25.78
C) 24.42 to 25.59
D) 19.15 to 30.85
E) 21.00 t0 32.00