Suppose that the random variable X takes the values -2, 1, 4, and 6 with probability values
Question:
(a) Find the expectation of X.
(b) Find the variance of V using the formula
Var(X) = E((X - E(X))2)
Find the variance of X using the formula
Var(X) = E(X2) - (E(X))2
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a EX 116 b V...View the full answer
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Related Book For 
Probability And Statistics For Engineers And Scientists
ISBN: 9780495107576
3rd Edition
Authors: Anthony Hayter
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