Discussion:
Q1: Suppose that X2 follows a chi-square distribution with 28 degrees of freedom. Compute P(22 <= X2<= 40)
Q2: Suppose that X2 follows a chi-square distribution with 30 degrees of freedom. Find k such that P(X2 >= k) = 0.025.
Q3: Find the median of the chi-square distribution with 14 degrees of freedom.