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Math-Exam
Math Exam 2
Question | Answer |
---|---|
what's mutually exclusive? | If A and B cannot occur at the same time |
Event A, you roll 3 on a die. Event B, you roll a 4 on a die. Are the events mutually exclusive or not mutually exclusive? Explain. | 1st event has 1 outcome, a 3. The 2nd event also has 1 outcome, a 4. These events cannot occur at the same time, so they're mutually exclusive. |
not mutually exclusive? | If A and B can occur at the same time |
Randomly select a male student. Randomly select a nursing major. Are the events mutually exclusive or not mutually exclusive? Explain. | Not mutually exclusive, because the student can be a male nursing major |
What's the formula to find P(B) given the values for P(A), P(A & B), and P(A or B)? | P(A)+P(B)-P(A&B)=P(A or B) |