Question:

The weekly incomes of senior shift foremen at the Rolls Royce aero-engine factory in Derby are normally distributed with a mean of £1,000 and a standard deviation of £100.

1. What is the z value for the income of a foreman who earns £1100 per week?
2. What is the z value for the income for a foreman who earns £900 per week?
3. What is the probability of selecting a foreman whose weekly income is:
4. between £1,000 and £1100?
5. who earns less than £1100?
6. whose income is between £790 and £1,000?
7. who earns less than £790?

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Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document