The table illustrates a sample of maintenance task times (in hours). 20.04 19.59 24.31 25.22 20.63 19.18
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Question:
The table illustrates a sample of maintenance task times (in hours).
20.04 | 19.59 | 24.31 | 25.22 | 20.63 |
19.18 | 15.22 | 15.59 | 17.11 | 22.49 |
17.92 | 17.24 | 17.41 | 17.44 | 20.27 |
20.47 | 21.23 | 26.02 | 16.96 | 26.28 |
20.50 | 20.03 | 19.15 | 22.23 | 18.66 |
16.61 | 22.71 | 22.08 | 10.57 | 17.31 |
19.56 | 19.89 | 20.65 | 22.88 | 17.26 |
26.35 | 18.09 | 18.22 | 15.42 | 21.71 |
18.80 | 20.67 | 19.35 | 20.80 | 18.08 |
17.17 | 18.87 | 18.94 | 21.24 | 13.51 |
Based on this information, calculate:
- Mct
- The standard deviation for this sample
- The percentage of corrective time between 25 and 27 hours by using the standard normal table.
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