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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
- 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:
Computer-Assisted, Individual-Based Program Team-Based Program |
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- Using a .05 level of significance, is there evidence of a difference in the average time to assemble a part between the two programs?
- Reject, -2.15 < -2.02
- Fail to reject, -2.15 < -2.02
- Reject, -2.42 < -2.02
- Fail to reject, -2.42 < -2.02
- Using a 0.05 level of significance, is there evidence of a difference in the variances between the two programs?
- Reject, 4.63 > 2.88
- Fail to reject, 4.63 > 2.88
- Reject, 5.60 > 2.46
- Reject, 5.63 > 2.88
- Using a .05 level of significance, is there evidence of a difference in the average time to assemble a part between the two programs?
3. Please write the null and alternative hypotheses for both 1 and 2.
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