At a school's open house, T-shirts and sweatshirts were sold. Fach ifern was purchased by either a student or a parent. S Student Parents T-shirt 18 21 Sweatshirt 17 14 Let T-ahirt be the event that an item randomly chosen from among those sold was a T-shirt. Let parent be the event that an item randomly chosen from among those sold was purchased by a parent. Find the following probabilities. Write your answers as decimals. (a) P(parent) -
(b) P(T-shirt and parent) -
(c) P(T-shirt I parent) -