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17.1 Life tests on a sample of five units were conducted to evaluate a component design
before release to production. The units failed at the following times:

Unit Failure Time,
Number hours
1 1200
2 1900
3 2800
4 3500
5 4500

Suppose that the component was guaranteed to last 1000 hours. Any failures during this
period must be replaced by the manufacturer at a cost of $200 for each component.
Although the number of test data is small, management wants an estimate of the cost
of replacements. If 4000 of these components are sold, provide a dollar estimate of
the replacement cost.

Solution Preview

A normal probability plot of the failure times indicates that the data is normally distributed.

The mean failure ...

Solution Summary

The life tests on samples of five units which were conducted to evaluate design components are determined. A dollar estimate of the replacement cost components are determined. A Complete, Neat and Step-by-step Solution is provided.