Suppose that X^2 follows a chi-square distribution with 19 degrees of freedom. Compute P(X^2 lessthanorequalto 20). Round your answer to at least three decimal places.
Suppose again that X^2 follows a chi-square distribution with 19 degrees of freedom. Find k such that P(x^2 greaterthanorequalto k)=0.05. Round your answer to at least two decimal places.
Find the median of the chi-square distribution with 19 degrees of freedom. Round your answer to at least two decimal places.
P(X^2 lessthanorequalto 20) = ?
k= ?
Median= ?