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Quality Engineer Certification(CQE) 模拟测试题
- Reject the lot
- Accept the lot
- Take a second sample
- Reinspect the sample
A manufacturer of air conditioners wants to estimate the mean life (years from installation to replacement) of its units. The error level is set at 0.5 year, a desired probability (1 - 
) of 95% is selected, and the standard deviation of unit life is given as 6.0 years. If unit life is normally distributed, then the required sample size for the desired estimate is equal to
- 283
- 291
- 554
- 585
The correct value for the expected frequency of cell I in the contingency table below is
| Alternative |
| Result | A | B | Total |
| X | I | II | 80 |
| Y | III | IV | 120 |
| Total | 130 | 70 | 200 |
- 28
- 42
- 52
- 78
Which of the following is an example of the hub system of document control?
- Area document control coordinators are responsible for issuing and controlling documents from departments in their area.
- A document control coordinator is responsible for establishing and implementing a company wide standard for document control.
- Satellite document stations are established throughout the facility.
- Each department is responsible for issuing and controlling its own documents.
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