1.The director of training for a company manufacturing electronic equipment is

1.The director of training for a company manufacturing electronic equipment is interested in determining whether different training methods have an effect on the productivity of assembly-line employees. She randomly assigns 42 recently hired employees into two groups of 21, of which the first receive a computer-assisted, individual-based training program and the other receive a team-based training program. Upon completion of the training, the employees are evaluated on the time (in seconds) it took to assemble a part. The results are as follows:

1.      Using a .05 level of significance, is there evidence of a difference in the average time to assemble a part between the two programs?

1.      Reject, -2.15 < -2.02

2.      Fail to reject, -2.15 < -2.02

3.      Reject, -2.42 < -2.02

4.      Fail to reject, -2.42 < -2.02

2.      Using a 0.05 level of significance, is there evidence of a difference in the variances between the two programs?

1.      Reject, 4.63 > 2.88

2.      Fail to reject, 4.63 > 2.88

3.      Reject, 5.60 > 2.46

4.      Reject, 5.63 > 2.88

                  3.  Please write the null and alternative hypotheses for both 1 and 2.