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In the 2012 presidential election, exit polls from the
Chapter 2, Problem 126E(choose chapter or problem)
In the 2012 presidential election, exit polls from the critical state of Ohio provided the following results:
Total |
Obama |
Romney |
No college degree (60%) |
52% |
45% |
College graduate (40%) |
47% |
51% |
What is the probability a randomly selected respondent voted for Obama?
Questions & Answers
QUESTION:
In the 2012 presidential election, exit polls from the critical state of Ohio provided the following results:
Total |
Obama |
Romney |
No college degree (60%) |
52% |
45% |
College graduate (40%) |
47% |
51% |
What is the probability a randomly selected respondent voted for Obama?
ANSWER:
Step 1 of 2
Let O be the event that the selected respondent voted for Obama. And the probability can be denoted as P(O).
According to the Total Probability Rule (Multiple Events), if we consider are k mutually exclusive and exhaustive sets. Then,