The event A, P(A) = 0.6. Find P(A).
(A) 0.1
(B) 0.4
(C) 0.5
(D) 0.6
(E) none of the above
2. Corrected_text: Two events A and B, P(A) = 0.4, P(B) = 0.5, P(AUB) = 0.6. Find P(AB).
(A) 0.4
(B) 0.5
(C) 0.1
(D) 0.3
(E) none of the above
3. Corrected_text: What percentage will this exam 2 take up in your final grade?
(A) 25
(B) 30
(C) 20
(D) 15
(E) none of the above
4. Corrected_text: Some random experiment is composed of 3 steps. The first step has 3 possible results, the second step has 4 possible results, and the third step has 7 possible results. Count the total number of outcomes of the experiment.
(A) 14
(B) 42
(C) 48
(D) 84
(E) none of the above
5. Corrected_text: During the period of time that a local university takes phone-in registration, calls come in at the rate of four every two minutes. Compute the expected number of calls in ten minutes.
(A) 40
(B) 10
(C) 8
(D) 20
(E) none of the above
6. Corrected_text: Compute the probability of three calls in two minutes.
(A) 0.20
(B) 0.35
(C) 0.18
(D) 0.17
(E) none of the above
7. Corrected_text: Compute the probability of three calls in one minute.
(A) 0.15
(B) 0.07
(C) 0.25
(D) 0.08
(E) none of the above
8. Corrected_text: Compute the probability of no call in one minute.
(A) 0.14
(B) 0.07
(C) 0.25
(D) 0.08
(E) none of the above
9. Corrected_text: Compute the probability of at least one call in one minute.
(A) 0.75
(B) 0.86
(C) 0.85
(D) 0.88
(E) none of the above
10. Corrected_text: Compute the probability of at most one call in two minutes.
(A) 0.15
(B) 0.07
(C) 0.09
(D) 0.08
(E) none of the above
11. Corrected_text: Two events A and B, P(B) = 0.5, P(A) = 0.4, P(AUB) = 0.60. Find P(A|B).
(A) 0.3
(B) 0.5
(C) 0.4
(D) 0.2
(E) none of the above
12. Corrected_text: Find P(B|A).
(A) 0.15
(B) 0.85
(C) 0.75
(D) 0.59
(E) none of the above
13. Corrected_text: Two events A and B are mutually exclusive, P(A) = 0.35, P(B) = 0.45. Find P(AB).
(A) 0.80
(B) 0.10
(C) 0.45
(D) 0.35
(E) none of the above
