The firstfourquestions (1to4)refer to the following:

Suppose we have the following facts about customers at a bakery:

44%of customers buy bread

25% of customers buy a cupcake

58%of customers buy bread or a donut

11%of customers buy bread and a cupcake

8% of customers buy bread and a donut

10%of customers buy a cupcake and a donut

5%of customers buy all three items

We will randomly select one customer. Let B be the event that the customer buys bread, let C be the event that the customer buys a cupcake, and let D be the event that the customer buys a donut.

Probabilities are numbers between 0 and 1, so your answers to the below questions should be decimals, not percentages.

Question 1

What is the probability that the selected customer buys bread or a cupcake?

Your Answer:

Question 2

What is the probability that the selected customerbuys none of the three items?

Your answer:

Question 4

In a random sample of 5 customers, what is the probability that 2 or fewer of them buy bread?

Keep 4 decimal places in intermediate calculations and round your final answer to 4 decimal places.

Your Answer: