For the random variable X, it is known that E(X4) = 50, E(2X2 + 7) = 17.
Question:
For the random variable X, it is known that E(X4) = 50, E(2X2 + 7) = 17.
Then the variance of the variable Y = X2 equals
(a) 25
(b) 50
(c) 75
(d) 94
(e) 100
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Related Book For 
Introduction To Probability Volume 2
ISBN: 9781118123331
1st Edition
Authors: Narayanaswamy Balakrishnan, Markos V. Koutras, Konstadinos G. Politis
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