An experimental serum was injected into 500 guinea pigs. Initially, 150 of the guinea pigs had circular cells, 225 had elliptical cells, and 125 had irregular cells. After the serum was injected, all of the guinea pigs with circular cells were affected, 125 with elliptical cells were affected, and none of those with irregular cells were affected. Determine the empirical probability that a guinea pig with (a) circular cells, (b) elliptical cells, and (c) irregular cells will be affected by injection of serum.
11.1#17