8-11. Let X1,X2, and X3 depict sample random variables drawn from a population with probability density function
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8-11. Let X1,X2, and X3 depict sample random variables drawn from a population with probability density function f (x) = 2e−2x, 0 ≤ x < +∞.
What is the joint probability density function of these random variables?
What is its generalization to a random sample of size n? What is the moment-generating function of Y = X1 + X2 + X3?
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Related Book For 
Advanced Statistics From An Elementary Point Of View
ISBN: 9780120884940
1st Edition
Authors: Michael J Panik
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