For a certain random variable X it is known that E[X] = 2, Var(X) = 3. What is E X2 ? 2. Let X be a random variable with E[X] = 2, Var(X) = 4. Compute the expectation and variance of 3 − 2X. 3....

For a certain random variable X it is known that E[X] = 2, Var(X) = 3. What is E X2 ?

2. Let X be a random variable with E[X] = 2, Var(X) = 4. Compute the expectation and variance of 3 − 2X.

3. Determine the expectation and variance of the Ber (p) distribution.