The time it takes a CPU to process a certain type of job is normally distributed with mean 25 seconds and standard deviation 2 seconds. If a sample of 16 such jobs is observed, what is the probability that the sample variance will exceed 4? The probability (A)0.4530 (B)0.4514 (C)0.9999 (D)0.5567

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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The time it takes a CPU to process a certain type of job is normally distributed
with mean 25 seconds and standard deviation 2 seconds. If a sample of 16
such jobs is observed, what is the probability that the sample variance will
exceed 4?
The probability
(A)0.4530
0.12
(B)0.4514
(C)0.9999
(D)0.5567
Transcribed Image Text:The time it takes a CPU to process a certain type of job is normally distributed with mean 25 seconds and standard deviation 2 seconds. If a sample of 16 such jobs is observed, what is the probability that the sample variance will exceed 4? The probability (A)0.4530 0.12 (B)0.4514 (C)0.9999 (D)0.5567
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