Suppose that a random variable X has the following moment generating function, Mx (t) = (1-9t)−7, t< < 1/1. (a) Find the mean of X. (b) Find the variance of X.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 1E
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Suppose that a random variable X has the following moment generating function,
< ¼/7.
MX(t)
=
= (1-9t)−7, t<
(a) Find the mean of X.
(b) Find the variance of X.
Transcribed Image Text:Suppose that a random variable X has the following moment generating function, < ¼/7. MX(t) = = (1-9t)−7, t< (a) Find the mean of X. (b) Find the variance of X.
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