The item below are based on the following scenario.
A manufacturer who is considering the implementation of a one-week training program to increase productivity for all new
employees. It is decided to test the program with the next 100 employees hired, and then compare their productivity rate to the
productivity rate of new employees based on past records---a rate that is normally distributed with a mean of 60 and a standard
deviation of 8. The mean productivity rate after the training program is 62.
Did the training significantly increase productivity?
A Yes, but only at the .05 level.
B Yes, but only at the .01 level.
C Yes, at the .05 and .01 levels.
D It's impossible to tell without knowing if it is a one- or two-tailed test.
