. Question 5 Suppose X ~ x'(13). Find k such that P(X Let X be a random variable from a Chi-Square Distribution with 19 degrees of freedom. Rylee is interested in the random variable Y = aX + b. She knows that E(Y) = 22 and V(Y) = 608. Rylee wants to find out all possible values of a and b that satisfy this criteria. Write your answer as an ordered pair, (a, b). If there are multiple solutions, separate the ordered pairs by a comma. Hint: Use properties of expected value and variance to find a and b