There are 32 families living in the Willbrook Farms Developm

There are 32 families living in the Willbrook Farms Development. Of these families, 15 prepared their own federal income taxes for last year, 11 had their taxes prepared by a local professional, and the remaining 6 by H&R Block.

What is the probability of selecting a family that prepared their own taxes? (Round your answer to 2 decimal places.)

What is the probability of selecting two families, both of which prepared their own taxes? (Round your answer to 4 decimal places.)

     

What is the probability of selecting three families, all of which prepared their own taxes? (Round your answer to 4 decimal places.)

      

What is the probability of selecting two families, neither of which had their taxes prepared by H&R Block? (Round your answer to 4 decimal places.)

      

(a)	What is the probability of selecting a family that prepared their own taxes? (Round your answer to 2 decimal places.)

Solution

a) 15/32 0.46875 0.47 b) 15C2/32C2 0.211694 0.2117 c) 15C3/32C3 0.091734 0.0917 d) 26C2/32C2 0.655242 0.6552