Question: Special distributions; negative binomial distributions 4.4.10. Suppose that the random variables X1 and X2 have mgfs Mx, (t) = and MX, (t) respec- 1-(1- 2)e

Special distributions; negative binomial distributions

4.4.10. Suppose that the random variables X1 and X2 have mgfs Mx, (t) = and MX, (t) respec- 1-(1- 2)e tively. Let X = X1 + X2. Does X have a geometric distri- bution? Assume that X, and X2 are independent

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