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Back to 7.3 Problems on Distribution and Density Functions

7.3 Exercise 15

Avg difficulty 2.5

Fifty percent of the components coming off an assembly line fail to meet specifications for a special job. It is desired to select three units which meet the stringent specifications. Items are selected and tested in succession. Under the usual assumptions for Bernoulli trials, what is the probability the third satisfactory unit will be found on six or fewer trials?

Pfeiffer, Applied Probability, 7.3 Problems on Distribution and Density Functions, exercise 15

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Adapted from Applied Probability © 2009 Paul E. Pfeiffer. Licensed under CC BY 3.0. Source: Applied Probability. Imported at revision d7a0420.