Let P (A ) = 0.70, P ( B |A ) = 0.55, and P(B | A

c) = 0.10. Use a probability tree to calculate the follo w in g probabilities:

a. P (A c)

b. P(A ∩ B) and P(A c ∩ B)

c. P (B)

d. P (A | B )  P-258