You are a server at Carbucks, a new coffee shop that utilizes a drive-up style o

Question

You are a server at Carbucks, a new coffee shop that utilizes a drive-up style of dining. If a car orders a single drink, then you don't need to get a serving tray - you can just walk the drink out to the customer. If a car orders at least two drinks or they order a food item, then you need to use a serving tray to take their order to them. At your store, 23 percent of cars order two drinks or more. Fifteen percent of cars order food items, and 4 percent of cars order at least two drinks and a food item to go with them. What is the probability that you will need to get a serving tray for your next order?

Explanation / Answer

P(You will need to get a serving tray for your next order)

= 0.23 + 0.15 + 0.04

= 0.42

Option B is correct.

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