# Question

Find µ'r and σ2 for the random variable X that has the probability density

## Answer to relevant Questions

Prove Theorem 4.7. Theorem 4.7 If X has the variance σ2, Then var(aX + b) = a2σ2 The symmetry or skewness (lack of symmetry) of a distribution is often measured by means of the quantity α3 = µ3/σ3 Use the formula for µ3 obtained in Exercise 4.25 to determine α3 for each of the following ...Find the moment- generating function of the discrete random variable of the discrete random variable f(x) = 2(1/3)x for x = 1,2,3,… And use it to determine the values of µ'1 and µ'2. With reference to Example 3.22 on page 94, find the covariance of X1 and X3. With reference to Exercise 3.74 on page 100, find the conditional mean and the conditional variance of Y given X = 1/4.Post your question

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