The probability that none of the three bulbs in a set of traffic lights will have to be replaced during the first 1200 hours of operation if the lifetime X of a bulb

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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The probability that none of the three bulbs in a set of traffic lights will have to
be replaced during the first 1200 hours of operation if the lifetime X of a bulb
(in thousands of hours) is a random variable with probability density function
f(x) = 6[0.25- (x- 1.5) ] when 1 Sxs2 and f(x) 0 otherwise is
O 0.7393
0.8960
O 0.8860
O 0.7282
O Other:
Transcribed Image Text:The probability that none of the three bulbs in a set of traffic lights will have to be replaced during the first 1200 hours of operation if the lifetime X of a bulb (in thousands of hours) is a random variable with probability density function f(x) = 6[0.25- (x- 1.5) ] when 1 Sxs2 and f(x) 0 otherwise is O 0.7393 0.8960 O 0.8860 O 0.7282 O Other:
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