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CHAPTER 6 SECTION 1: PROBABILITY
MULTIPLE CHOICE
1.
An approach of assigning probabilities which assumes that all outcomes of the experiment are equally
likely is referred to as the:
a.
subjective approach
b.
objective approach
c.
classical approach
d.
relative frequency approach
ANS: C
PTS: 1
REF: SECTION 6.1
2. If
A
and
B
are mutually exclusive events with
P
(
A
) = 0.70, then
P
(
B
):
3.
If you roll a balanced die 50 times, you should expect an even number to appear:
4.
The collection of all possible outcomes of an experiment is called:
5.
Which of the following is an approach to assigning probabilities?
a.
Classical approach
b.
Relative frequency approach
c.
Subjective approach
d.
All of these choices are true.
ANS: B
PTS: 1
REF: SECTION 6.1
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6.
A sample space of an experiment consists of the following outcomes: 1, 2, 3, 4, and 5. Which of the
following is a simple event?
7.
Which of the following is a requirement of the probabilities assigned to outcome
O
i
?
8.
If an experiment consists of five outcomes with
P
(
O
1
) = 0.10,
P
(
O
2
) = 0.20,
P
(
O
3
) = 0.30,
P
(
O
4
) = 0.15,
then
P
(
O
5
) is
9.
Of the last 500 customers entering a supermarket, 50 have purchased a wireless phone. If the relative
frequency approach for assigning probabilities is used, the probability that the next customer will
purchase a wireless phone is
a.
0.10
b.
0.90
c.
0.50
d.
None of these choices.
ANS: A
PTS: 1
REF: SECTION 6.1
10.
If two events are collectively exhaustive, what is the probability that one or the other occurs?
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 Spring '10
 Kumar
 Interest Rates, Probability theory, pts, REF, Cameron

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