Name: __________________________________________ Pd: ________ Date: _________________
11-4
Conditional Probability
Use the table at the right to find each
probability.
3. P(has less than a high school education)
4. P(earns over $30,000 and has less than high
school education)
5. P(earns over $30,000 | has only a high school education)
6. P(has high school education or less | earns over $30,000)
Use the table to
find each
probability. The
tables gives
information
about students
at one school.
7. P(sports|female)
8. P(female|sports)
9. P(reading|male)
10. P(male|reading)
11. P(shopping|male)
12. (female|shopping)
You survey a group of juniors and seniors. The tree diagram relates
a student’s class and whether a student is employed after school.
Find each probability. Let J, S, E, and U represent junior, senior,
employed, and unemployed, repectively.
13. P(E)
14. P(J and U)
15. P(S|E)
16. P(J|U)