For a chi-squared distribution, find 2 such that (a) P(X2 > 2 )=0.01 when v = 21; (b) P(X2 < 2 )=0.95 when v

For a chi-squared distribution, find χ2

α such that

(a) P(X2 > χ2

α)=0.01 when v = 21;

(b) P(X2 < χ2

α)=0.95 when v = 6;

(c) P(χ2

α < X2 < 23.209) = 0.015 when v = 10.