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? a. Reject, -2.15 <-2.02 b. Fail to reject, -2.15 < -2.02 c. Reject, -2.42<-2.02 d. 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? a. Reject, 4.63> 2.88 b. Fail to reject, 4.63 > 2.88 c. Reject, 5.60 > 2.46 d. Reject, 5.63 > 2.88 3. Please write the null and alternative hypotheses for both 1 and 2.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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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:
Computer-Assisted, Individual-Based Program
Team-Based Program
19.4
16.7
22.4
13.8
20.7
19.3
18.7
18.0
21.8
16.8
19.3
20.8
14.1
17.7
15.6
17.1
16.1
19.8
18.0
28.2
16.8
19.3
21.7
20.8
14.7
16.0
30.7
24.7
16.5
17.7
23.7
17.4
16.2
17.4
23.2
20.1
16.4
16.8
12.3
15.2
18.5
16.0
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?
a. Reject, -2.15<-2.02
b. Fail to reject, -2.15 < -2.02
c. Reject, -2.42 < -2.02
d. 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?
a. Reject, 4.63 > 2.88
b. Fail to reject, 4.63 > 2.88
c. Reject, 5.60 > 2.46
d. Reject, 5.63 > 2.88
3. Please write the null and alternative hypotheses for both 1 and 2.
Transcribed Image Text: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: Computer-Assisted, Individual-Based Program Team-Based Program 19.4 16.7 22.4 13.8 20.7 19.3 18.7 18.0 21.8 16.8 19.3 20.8 14.1 17.7 15.6 17.1 16.1 19.8 18.0 28.2 16.8 19.3 21.7 20.8 14.7 16.0 30.7 24.7 16.5 17.7 23.7 17.4 16.2 17.4 23.2 20.1 16.4 16.8 12.3 15.2 18.5 16.0 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? a. Reject, -2.15<-2.02 b. Fail to reject, -2.15 < -2.02 c. Reject, -2.42 < -2.02 d. 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? a. Reject, 4.63 > 2.88 b. Fail to reject, 4.63 > 2.88 c. Reject, 5.60 > 2.46 d. Reject, 5.63 > 2.88 3. Please write the null and alternative hypotheses for both 1 and 2.
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