another sample midterm - Oncourse
another sample midterm - Oncourse another sample midterm - Oncourse
equally likely, 5 is half as likely as 2, and 6 is four times as likely as 4. Find Pr[1]. (A) 1/17 (B) 1/6 (C) 2/17 (D) 1/10 (E) 17/4 (F) none of the above 22. Two indepentent events A and B have probabilities Pr[A] = .2 and Pr[B] = .8. Find Pr[A ∪ B]. (A) .16 (B) .84 (C) .8 (D) 1 (E) .64 (F) none of the above 23. The Lord motor company produces 40% of its cars at plant A and the remainder at plant B. Of
all cars produced at plant A, 20% do not have a spare tire, while 30% of the cars produced at B do not have a spare tire. A Lord car is purchased, and it happens to have a spare tire. What is the probability that the car was produced at plant A? (A) .7 (B) .8 (C) 32/74 (D) 1/2 (E) 42/74 (F) none of the above 24. For two events A and B we have Pr[A ′ ] = .71, Pr[B] = .43, and Pr[A ∪ B] = .65. Find Pr[A ∩ B]. (A) .16 (B) .43 (C) .08 (D) .27
- Page 1 and 2: 1. Professor Umbuggio has decided t
- Page 3 and 4: many different choices do you have
- Page 5 and 6: has subsets A = {1,2,3,4}, B = {1,2
- Page 7 and 8: nor sophomores nor Indiana resident
- Page 9 and 10: consists of watching a movie, then
- Page 11 and 12: (A) $424 (B) $30 (C) $50.20 (D) $10
- Page 13: (D) 1 − C(15,12)(.2) 3 (.8) 12 (E
equally likely, 5 is half as likely<br />
as 2, and 6 is four times as likely<br />
as 4. Find Pr[1].<br />
(A) 1/17<br />
(B) 1/6<br />
(C) 2/17<br />
(D) 1/10<br />
(E) 17/4<br />
(F) none of the above<br />
22. Two indepentent events A and B<br />
have probabilities Pr[A] = .2 and<br />
Pr[B] = .8. Find Pr[A ∪ B].<br />
(A) .16<br />
(B) .84<br />
(C) .8<br />
(D) 1<br />
(E) .64<br />
(F) none of the above<br />
23. The Lord motor company produces<br />
40% of its cars at plant A<br />
and the remainder at plant B. Of
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