Anthony is making a collage for his art class by picking shapes randomly. he has five squares, two triangles, two ovals, and four circles. find p(a triangle or a square is chosen first).

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?