Homework SourseThe data in the Problem 5 worksheet of the Data file gives t
The data in the Problem 5 worksheet of the “Data” file gives the average weight for a run of a particular product. The desired weight is 80.
a. Prove if this run is different from the desired weight (95% confidence level).
b. Assume you wish to design the test so that if the true weight differs from 80 by as much as 1, the test will detect this with a high probability (0.90). What is the minimum recommended sample size?
| 79.57041 |
| 80.2044 |
| 78.41281 |
| 78.46854 |
| 78.29528 |
| 81.50792 |
| 80.91934 |
| 76.83511 |
| 78.75906 |
| 78.25698 |
| 77.1058 |
| 80.42765 |
| 77.68243 |
| 76.05176 |
| 78.10652 |
| 76.46667 |
| 79.16165 |
| 81.96611 |
| 77.0451 |
| 78.14036 |
| 80.12461 |
| 77.03858 |
| 77.81332 |
| 78.95257 |
| 77.79313 |
| 80.45822 |
| 79.12508 |
| 79.18585 |
| 75.74377 |
| 75.87385 |
| 77.17307 |
| 80.08272 |
| 76.53555 |
| 75.52677 |
| 79.3229 |
| 78.71004 |
| 74.8263 |
| 82.28452 |
| 79.66229 |
| 80.97009 |
| 76.79542 |
| 79.95095 |
| 80.69795 |
| 77.75285 |
| 77.06659 |
| 78.50403 |
| 79.06679 |
| 80.53678 |
| 78.30829 |
| 79.59353 |
Solution
