1. 11.9 Independent and
Dependent Events
Lesson Title: 11.9 Independent and Dependent Events
Objective: The students will be able to explain the difference
Lesson Title: 11.9 Independent and Dependent
Events
Objective: The students will be able to explain the
difference between independent and dependent
between independent and dependent events. The students will events. The students will be able to find the
be able to find the probability of independent and dependent probability of independent and dependent events.
events. Method:
Method: 1. Review the homework with the students.
1. Begin by explaining independent and dependent events. 2. Allow the students to ask any questions that
2. Next show the students how to tell the difference they may have from the homework.
between independent and dependent events using 3. Go over more practice problems with the
situations. students.
3. Show the students how to find the probability of an A: 11.9 odd
independent event.
April 28, 2011
4. Next, show the students how to find the probability of a
dependent event.
5. Have the students practice several problems.

4. ❖Two events are independent events if
the occurrence of one event does not
affect the probability of the occurrence
of the other event.

5. ❖Two events are independent events if
the occurrence of one event does not
affect the probability of the occurrence
of the other event.
❖Two events are dependent events if
the occurrence of one event does affect
the probability of the occurrence of the
other event.

6. Example 1:

7. Example 1:

8. Example 1:

13. Example 2:

14. Example 2:

17. Example 3:

18. Example 3: