SOLUTION: 1). At Dee Dee's Dinette the probability that a customer orders coffee is 0.40, the probability that a customer orders pie is 0.35, and the probability that a customer orders both

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Question 1053487: 1). At Dee Dee's Dinette the probability that a customer orders coffee is 0.40, the probability that a customer orders pie is 0.35, and the probability that a customer orders both coffee and pie is 0.20. Find the probability that a customer orders neither coffee nor pie. Given answer as a decimal number to two decimal places.

Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
If the probability for coffee is .4, and the probability for pie is .35, and the probability for both is .2, then:
.4+.35-.2=.55 is the probability that a customer orders either coffee or pie, or both. Therefore, the probability of a customer ordering neither is 1-.55, or .45 ☺☺☺☺☺