suppose we have the following facts about customers at a bakery: 1 to 4

50%

40%

74%

12%

9%

5%

2%

we will randomly select one costumer. Let B be the event that the customers buys bread, let C be the event that the customers buys and let D be the event that the customers buys a donut.

1 what is P(B C), the probability that selected customer buys a bread or a cupcake?

0.78

0.75

0.77

0.79

0.76

2 What is the probability that the selected customer buys none of the three items?

0.01

0.03

0.02

0.05

0.04

3 Which of the following pairs events are independent of each other?

B and C

B and D

C and D

all of the above

none of the above

4 In random sample of 7 customers, what is the probability that 2 or more of them buy bread?

0.9375

0.9575

0.9675

0.9275

0.9475