(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.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.CR: Chapter 13 Review
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(c)
A manufadure 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.
i.
at least three lamps will yield unsatisfactory result.
Transcribed Image Text:(c) A manufadure 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. i. at least three lamps will yield unsatisfactory result.
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