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Unformatted text preview: 1. The amount of time required for a job trainee to complete a manual dexterity test is normally distributed with a mean of 13 minutes and standard deviation of 3 minutes. a. What percent of trainees take more than 15 minutes to complete the test? b. What percent of the trainees take less than 12 minutes to complete the test? 2. Refer to the problem above. Now, suppose that we randomly select 10 trainees and calculate their average test time. a. What is the probability that the average is over 15 minutes? b. What is the probability that the average is less than 12 minutes?...
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This note was uploaded on 04/28/2008 for the course ST 511 taught by Professor Prof.kimweems during the Spring '08 term at N.C. State.
- Spring '08