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Sarah is the owner of Sarah’s Pub, and her best business is on Friday and Saturday...

Sarah is the owner of Sarah’s Pub, and her best business is on Friday and Saturday nights when customers buy plenty of alcoholic beverages (alcohol). After studying a large sample of receipts from Friday and Saturday nights, Sarah knows the following. 73% of her orders on these nights involve at least one alcohol sale. 23% of her customers order only alcohol, 28% have dinner plates, and the rest have sandwiches.   Of those who order dinner plates, 60% order alcohol; and of those who order sandwiches, 89% order alcohol.

What is the probability that a randomly selected customer orders a sandwich?

What is the probability a randomly selected customer ordered alcohol and a sandwich?

What is the probability a randomly selected customer ordered alcohol or a sandwich?

What is the probability a randomly selected orders alcohol and a dinner plate?

Math   Statistics-And-Probability   
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