For a chi-squared distribution, find (a) 2 0.005 when v = 5; (b) 2 0.05 when v = 19; (c) 2 0.01 when v =

For a chi-squared distribution, find

(a) χ2 0.005 when v = 5;

(b) χ2 0.05 when v = 19;

(c) χ2 0.01 when v = 12.