Given a random variable X with MGF m(t)= 8/(2-t)^3 find mu sigma E(X^3) If Y= 3X-2, then E(Y)= V(Y)=?

• Given a random variable X with MGF m(t)= 8/(2-t)^3 find mu sigma E(X^3) If Y= 3X-2, then E(Y)= V(Y)=?

Math 510 midterm 3 answers ... a standard normal random variable) and let Y = −X. ... M X(t) = 1+E[X]t+ E[X2] 2! t2 + E[X3] 3! t3 + ...
Positive: 22 %
Variance, covariance, correlation, moment-generating ... of a random variable X: M(0) ... deﬁnition of the mgf of X + Y is the expectation of et ...
Positive: 19 %

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