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Get Full Access to Probability And Statistics For Engineers And The Scientists - 9 Edition - Chapter 4 - Problem 72e
Get Full Access to Probability And Statistics For Engineers And The Scientists - 9 Edition - Chapter 4 - Problem 72e

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# The lifetime X (in hundreds of hours) of a certain type of

ISBN: 9780321629111 32

## Solution for problem 72E Chapter 4

Probability and Statistics for Engineers and the Scientists | 9th Edition

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Problem 72E

The lifetime ?X ?(in hundreds of hours) of a certain type of vacuum tube has a Weibull distribution with parameters ? and ? . Compute the following: a.?? ? ?X?) an? ?(?X?) b. P(X ? 6) c.P(1.5 ? X ? 6) (This Weibull distribution is suggested as a model for time in service in “On the Assessment of Equipment Reliability: Trading Data Collection Costs for Precision,” ?J. of Engr. Manuf., ?1991: 105–109.)

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Chapter 4: Person vs. Situation  The person, the situation, and the problem with individual differences o Social psychologists generally study the way a person or group of people respond to their environment. This can be termed situationism and simply states that the situation is the most important factor in determining our behavior. o Personality psychologists, on the other hand, are more interested in the way individual difference, or traits, affect the way a person behaves.  Milgram replication study continued o It tells us that the situation is very important, but it also tell us something else­ something that I think the social psychologist miss out on, and something which I think is far more in

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