It has been suggested that daily production of a subassembly would be increased if better lighting were installed and background music and free coffee and doughnuts were provided during the day. Management agreed to try the scheme for a limited time. A listing of the number of subassemblies produced per week before and after the new work environment for each employee follows. Employee Past Production Record Production after Installing, Lighting, Music, etc. JD 23 33 SB 26 26 MD 24 30 RCF 17 25 MF 20 19 UHH 24 22 IB 30 29 WWJ 21 25 OP 25 22 CD 21 23 PA 16 17 RRT 20 15 AT 17 9 QQ 23
It has been suggested that daily production of a subassembly would be increased if better lighting were installed and background music and free coffee and doughnuts were provided during the day. Management agreed to try the scheme for a limited time. A listing of the number of subassemblies produced per week before and after the new work environment for each employee follows. Employee Past Production Record Production after Installing, Lighting, Music, etc. JD 23 33 SB 26 26 MD 24 30 RCF 17 25 MF 20 19 UHH 24 22 IB 30 29 WWJ 21 25 OP 25 22 CD 21 23 PA 16 17 RRT 20 15 AT 17 9 QQ 23
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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It has been suggested that daily production of a subassembly would be increased if better lighting were installed and background music and free coffee and doughnuts were provided during the day. Management agreed to try the scheme for a limited time. A listing of the number of subassemblies produced per week before and after the new work environment for each employee follows.
| Employee | Past Production Record | Production after Installing, Lighting, Music, etc. |
| JD | 23 | 33 |
| SB | 26 | 26 |
| MD | 24 | 30 |
| RCF | 17 | 25 |
| MF | 20 | 19 |
| UHH | 24 | 22 |
| IB | 30 | 29 |
| WWJ | 21 | 25 |
| OP | 25 | 22 |
| CD | 21 | 23 |
| PA | 16 | 17 |
| RRT | 20 | 15 |
| AT | 17 | 9 |
| 23 |
|
Show your work, please. Thanks!
Transcribed Image Text:c. Compute Tand arrive at a decision.
X Answer is not complete.
T =
do not reject
Ho-
Transcribed Image Text:Using the Wilcoxon signed-rank test, determine whether the suggested changes are worthwhile. Assume the level of significance is
0.05.
a. State the null and alternate hypotheses.
Answer is complete and correct.
Ho:
Production has not changed
H1:
Production has increased (one tail)
b. State the decision rule. Use the 0.05 significance level.
X Answer is complete but not entirely correct.
Reject Ho if Ts
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