Refer to the contingency table below

Smoking by race for males 18 - 24

Smoker (S) Nonsmoker (N) Row Total

White (W) 255 520 775

Black (B) 10 215 225

Total 265 735 1000

(a) Calculate the probabilities given below (Round to 4 decimal places)

i P(S)

ii P(W)

iii P(S | W)

iv P( S | B)

v P(S and W)

vi P(N and B)