A discrete random variable takes the values -22, 3, 19, and 23 with probabilities 0.3, 0.2, 0.1,

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A discrete random variable takes the values -22, 3, 19, and 23 with probabilities 0.3, 0.2, 0.1, and 0.4 respectively.
(a) What is the expectation of the random variable?
(b) What is the standard deviation of the random variable?

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Probability And Statistics For Engineers And Scientists

ISBN: 9780495107576

3rd Edition

Authors: Anthony Hayter

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Question Posted: Jun 22, 2016 07:06 AM

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A discrete random variable takes the values -22, 3, 19, and 23 with probabilities 0.3, 0.2, 0.1,

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a EX 22 03 3 02 19 01 23 04 51 ...View the full answer

Probability And Statistics For Engineers And Scientists

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