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Questions 1-2
326
Question
1.
Recent estimates say that 66% of U.S. homes have a garage or carport, 10% have a swimming pool, and 8% have both. If a randomly selected home has a garage, what is the probability it has a pool?
A.
B.
C.
D.
Correct. We want the conditional probability P(pool | garage). This is P(pool and garage)/P(garage) = 0.08/0.66.
Incorrect. We want the conditional probability P(pool | garage). This is P(pool and garage)/P(garage) = 0.08/0.66.
2
Try again.
Question
2.
Recent estimates say that 66% of U.S. homes have a garage or carport, 10% have a swimming pool, and 8% have both. What is the probability a home has a garage, given it has a pool?
A.
B.
C.
D.
Correct. We want the conditional probability P(garage | pool). This is P(pool and garage)/P(pool) = 0.08/0.10.
Incorrect. We want the conditional probability P(garage | pool). This is P(pool and garage)/P(pool) = 0.08/0.10.