SOLUTION: 1. From a bag containing 4 black balls and 5 white balls, two balls are drawn one at a time.(9pts) a. Find the probability that both balls are white. Assume that the first ball is

Question 872016: 1. From a bag containing 4 black balls and 5 white balls, two balls are drawn one at a time.(9pts)
a. Find the probability that both balls are white. Assume that the first ball is returned before the second ball is drawn.
b. Find the probability of getting 1 black and 1 white in two consecutive draws
c. Find the probability of getting at least 1 black in 4 consecutive draws.

Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi

9Balls: 4B, 5W

Assume that the first ball is returned before the second ball is drawn.

a) 2draws:  P(2W) = 

b) 2 consecutive draws(w/o replacement):  P(B and W) = 

c) 4 consecutive draws(w/o replacement): P(at least 1 B) = 1- P(no B) = 1-  

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