Lectures - 3.1 Probability Measures: Axioms and Properties
Quiz 3.1 #1
Let A and B be subsets of U.
Pr(A’) = 0.7
Pr(A U B) = 0.6
Pr(B) = 0.4
What is Pr(A ∩ B)?
- A. 0.1
- B. 0.3
- C. 0.6
Quiz 3.1 #2
In a particular survey,
80% say they regularly shop at Walmart
60% regularly shop at Kroger
10% regularly shop at neither.
What’s the probability that a randomly selected person from the survey regularly shops at both stores?
- A. 10%
- B. 30%
- C. 50%