Use the contingency table to the right to determine the probability of events

a. What is the probability of event A'

b. What is the probability of event A and B

c. What is the probability of event A' and B'

d. What is the probability of event A' or B

B B'

A 30 60

A' 50 50

a. The probability of event A' is

round to three decimal places as needed

b. The probability of event A and B is

round to three decimal places as needed

c. The probability of event A' and B' is

round to three decimal places as needed

d. The probability of event A' or B' is

round to three decimal places as needed