ECO 3401
Unit 3 Practice Exam
Name___________________________________
MULTIPLE CHOICE.
Choose the one alternative that best completes the statement or answers the question.
Write the sample space for the given experiment.
1) A coin is tossed, and then a die is rolled.
1)
A) {(h, 1), (h, 2), (h, 3), (h, 4), (h, 5), (h, 6), (t, 1), (t, 2), (t, 3), (t, 4), (t, 5), (t, 6)}
B) {(2, 6)}
C) {(h, t, 1, 2, 3, 4, 5, 6)}
D) {(1, h), (2, h), (3, h), (4, h), (5, h), (6, h), (1, t), (2, t), (3, t), (4, t), (5, t), (6, t)}
2) A card is selected at random from a deck and its suit is recorded. Then a coin is tossed.
2)
A) {(head, spade), (head, club), (head, heart), (head, diamond), (tail, spade), (tail, club), (tail,
heart), (tail, diamond)}
B) {(4, 2)}
C) {(spade, head), (club, head), (heart, head), (diamond, head), (spade, tail), (club, tail), (heart,
tail), (diamond, tail)}
D) {(club, diamond, heart, spade, head, tail)}
Find the indicated probability.
3)
The distribution of B.A. degrees conferred by a local college is listed below, by major.
Major
Frequency
English
2073
Mathematics
2164
Chemistry
318
Physics
856
Liberal Arts
1358
Business
1676
Engineering
868
9313
What is the probability that a randomly selected degree is in Engineering?
3)
A) 868
B) 0.0012
C) 0.1028
D) 0.0932
4) Find the probability that a number less than 5 is obtained when a fair die is rolled.
4)
A)
1
2
B)
5
6
C)
2
3
D) 0
Find the indicated probability.
5) If P(A
1
B)
=
0.65, P(A)
=
0.34, and P(B)
=
0.48, find P(A
.
B).
5)
A) 0.58
B) 0.17
C) 0.29
D) 0.13
1