Find the expected value of the random variable. A student models the number of revolutions X on

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Find the expected value of the random variable.
A student models the number of revolutions X on a pencil sharpener that are needed to fully sharpen his pencil, by using density

And fx(x) = 0 otherwise.

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Introduction to Probability

ISBN: 978-0716771098

1st edition

Authors: Mark Daniel Ward, Ellen Gundlach

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Question Posted: Mar 14, 2016 06:40 AM

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Find the expected value of the random variable. A student models the number of revolutions X on

Question:

19) for 19 S ,-1 (z-22) for 20 < s 20 22; x (x)

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Introduction to Probability

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