Refer to the contingency table shown below.

Smoking by Race for Males Aged 18-24

Smoker(S) Nonsmoker (N) Row Total

White (W) 291 517 808

Black (B) 21 171 192

Column Total 312 688 1,000

(a)Calculate the probabilities given below:(Round your answers to 4 decimal places.)

i.P(S)ii.P(W)iii.P(S|W)iv.P(S|B)v.P(SandW)vi.P(NandB)

(b)Do you see evidence that smoking and race arenotindependent?

yes or no