Languages At your high school, a student can take one foreign language each term. About 37% of the students take Spanish. About 15% of the students take French. What is the probability that a student chosen at random is taking Spanish or French?
Know | Need | Plan |
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The probability that a student is taking Spanish or French. | Use the correct formula for P(A or B). |
“One foreign language each term” means the events are mutually exclusive.
The probability that a student chosen at random is taking Spanish or French is about 0.52, or about 52%.
When two events are not mutually exclusive, you need to subtract the probability of the common outcomes to find P(A or B).
Multiple Choice Suppose you reach into the dish and select a token at random. What is the probability that the token is round or green?
Are the events mutually exclusive?
No; it is possible to have a round and green token.
The probability of selecting a round or green token is