# Question: If the mgf of X is Find a E X b Var X

If the mgf of X is

Find

(a) E(X),

(b) Var(X), and

(c) P(4.2 < X ≤ 4.7).

Find

(a) E(X),

(b) Var(X), and

(c) P(4.2 < X ≤ 4.7).

**View Solution:**## Answer to relevant Questions

A grocery store has n watermelons to sell and makes $1.00 on each sale. Say the number of consumers of these watermelons is a random variable with a distribution that can be approximated by A pdf of the continuous type. If ...Say the serum cholesterol level (X) of U.S. males ages 25–34 follows a translated gamma distribution with pdf (a) What are the mean and the variance of this distribution? (b) What is the mode? (c) What percentage have a ...If X has a gamma distribution with θ = 4 and α = 2, find P(X < 5). Let the distribution of X be N(μ, σ2). Show that the points of inflection of the graph of the pdf of X occur at x = μ ± σ. Determine the indicated probabilities from the graph of the second cdf of X in Figure 3.4-4: (a) P (−1/2 ≤ X ≤ ½) . (b) P (1/2 < X< 1) . (c) P (3/4 < X < 2). (d) P(X > 1). (e) P(2 < X < 3). (f) P(2 < X ≤ 3).Post your question