Statistics
Research and Evaluation: Example Problem
July 9, 2019Activity Estimation Constructions
July 9, 201917.1 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 datais 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.
A normal probability plot of the failure times indicates that the data is normally distributed.
The mean failure …
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.
