(c) A manufature of front lights for automobiles runs a test on lamps under a high humidity and high temperature environment using intensity and useful life as the responses of interest. According to his result, 30% of them yield unsatisfactory results under any criteria. A sample of 12 lamps are chosen and tested. Calculate the probability that: i. 2 lamps will yield unsatisfactory result. at least three lamps will yield unsatisfactory result.

(c) A manufature of front lights for automobiles runs a test on lamps under a high humidity and high temperature environment using intensity and useful life as the responses of interest. According to his result, 30% of them yield unsatisfactory results under any criteria. A sample of 12 lamps are chosen and tested. Calculate the probability that: i. 2 lamps will yield unsatisfactory result. at least three lamps will yield unsatisfactory result.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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