
Concept explainers
To determine: The difference shown by the second set of sample from the first one.
Introduction
Company TT is a division of company DM. It was about to launch a new product. Ms. MY, the
Table 1
Sample | Mean | Range |
1 | 45.01 | 0.85 |
2 | 44.99 | 0.89 |
3 | 45.02 | 0.86 |
4 | 45 | 0.91 |
5 | 45.04 | 0.87 |
6 | 44.98 | 0.9 |
7 | 44.91 | 0.86 |
8 | 45.04 | 0.89 |
9 | 45 | 0.85 |
10 | 44.97 | 0.91 |
11 | 45.11 | 0.84 |
12 | 44.96 | 0.87 |
13 | 45 | 0.86 |
14 | 44.92 | 0.89 |
15 | 45.06 | 0.87 |
16 | 44.94 | 0.86 |
17 | 45 | 0.85 |
18 | 45.03 | 0.88 |
Quiet disappointed with the end results, the manager was figuring out ways to improve the process and free the capital expenditure of $10,000. A former professor suggested going for more samples with less sample sizes. JM conducted the analysis on 27 samples of 5 observations each and the results are tabulated below:
Table 2
Sample | Mean | Range |
1 | 44.96 | 0.42 |
2 | 44.98 | 0.39 |
3 | 44.96 | 0.41 |
4 | 44.97 | 0.37 |
5 | 45.02 | 0.39 |
6 | 45.03 | 0.4 |
7 | 45.04 | 0.39 |
8 | 45.02 | 0.42 |
9 | 45.08 | 0.38 |
10 | 45.12 | 0.4 |
11 | 45.07 | 0.41 |
12 | 45.02 | 0.38 |
13 | 45.01 | 0.41 |
14 | 44.98 | 0.4 |
15 | 45 | 0.39 |
16 | 44.95 | 0.41 |
17 | 44.94 | 0.43 |
18 | 44.94 | 0.4 |
19 | 44.87 | 0.38 |
20 | 44.95 | 0.41 |
21 | 44.93 | 0.39 |
22 | 44.96 | 0.41 |
23 | 44.99 | 0.4 |
24 | 45 | 0.44 |
25 | 45.03 | 0.42 |
26 | 45.04 | 0.38 |
27 | 45.03 | 0.4 |

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Chapter 10 Solutions
EBK OPERATIONS MANAGEMENT
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