# Probability of selecting samples

**Question description**

There are 20 families living in the Willbrook Farms Development. Of these families 10 prepared their own federal income taxes for last year, 7 had their taxes prepared by a local professional, and the remaining 3 by H&R Block.

Probability

(b)

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

Probability

(c)

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

Probability

(d)

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.)

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