Chef Lopez baked his famous casseroles for a company holiday party. The casseroles have different shapes and different delicious fillings. The probability that a casserole is shaped like a circle is 0.4, the probability that it includes chicken is 0.4, and the probability that it is shaped like a circle and includes chicken is 0.2.
What is the probability that a randomly chosen casserole is shaped like a circle or includes chicken?
To find the probability that a randomly chosen casserole is shaped like a circle or includes chicken, we use the formula for the union of two events: P(A or B) = P(A) + P(B) - P(A and B).
P(circle) = 0.4
P(chicken) = 0.4
P(circle and chicken) = 0.2
P(circle or chicken) = P(circle) + P(chicken) - P(circle and chicken)
P(circle or chicken) = 0.4 + 0.4 - 0.2
P(circle or chicken) = 0.6
Therefore, the probability that a randomly chosen casserole is shaped like a circle or includes chicken is 0.6.