conditional probability

What is the probability that a randomly selected student plays sports and does not participate in community service?

Mary is a good student. The probability that she studies and passes her test is 3/5. If the probability that she studies is 8/9. What is the probability that she passes given that she studies? 

• 27/40
• 1.48
• .008
• .0593

Tags

CCSS.HSS.CP.B.6

Pr(A∣B)

• Pr(A∩B)/Pr(B)

• Pr(A∩B)/P(A)

Tags

CCSS.HSS.CP.A.3

CCSS.HSS.CP.A.5

P(crew∣did not survive) =

• P(crew ∩ did not survive)

• P(crew)/P(did not survive)

• P(crew ∩ did not survive)/P(crew)

• P(crew ∩ did not survive)/P(did not survive)

Tags

CCSS.HSS.CP.A.3

CCSS.HSS.CP.A.5

Mary is a good student. The probability that she studies and passes her test is 3/5. If the probability that she studies is 8/9. What is the probability that she passes given that she studies? 

• 27/40
• 1.48
• .008
• .0593

Tags

CCSS.HSS.CP.B.6