. Find the probability that the lifetime of a given device exceeds 2 hours. 3. Find the probability that the lifetime of a given device exceeds 10 hours given that the life time already exceeded 9 hours. C. Find the probability that out of 3 devices, the lifetimes of at least 2 devices exceed 2 hours.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A , B and C
Part 2: The lifetime of a certain type of electronic devices (measured in hours) follows an exponential
random variable with parameters a = 0 and b = 2. The probability density function (pdf) and the
cumulative distribution function (cdf) of the Exponential distribution are, respectively,
fx(x) =D
10.
Exte):
and
A. Find the probability that the lifetime ofa given device exceeds 2 hours.
B. Find the probability that the lifetime of a given device exceeds 10 hours given that the life time
already exceeded 9 hours.
C. Find the probability that out of 3 devices, the lifetimes of at least 2 devices exceed 2 hours.
Transcribed Image Text:Part 2: The lifetime of a certain type of electronic devices (measured in hours) follows an exponential random variable with parameters a = 0 and b = 2. The probability density function (pdf) and the cumulative distribution function (cdf) of the Exponential distribution are, respectively, fx(x) =D 10. Exte): and A. Find the probability that the lifetime ofa given device exceeds 2 hours. B. Find the probability that the lifetime of a given device exceeds 10 hours given that the life time already exceeded 9 hours. C. Find the probability that out of 3 devices, the lifetimes of at least 2 devices exceed 2 hours.
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