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Chapter 2
Probability
True/False Questions
1.
Objective probability involves personal judgment or intuition in a given context.
Answer: False
Type: Concept
Difficulty: Easy
2.
Those elements that are not in Set A are called the complement of A.
Answer: True
Type: Concept
Difficulty: Easy
3.
The set of all basic outcomes of an experiment is called the union of the set.
Answer: False
Type: Concept
Difficulty: Easy
4.
In the experiment of tossing a fair die once, the sample space includes six events.
Answer: True
Type: Concept
Difficulty: Easy
5.
The probability of event A is defined as the number of ways event A can occur,
divided by the number of outcomes possible in the experiment.
Answer: True
Type: Concept
Difficulty: Easy
6.
In the experiment consisting of drawing one card at random from a standard deck of
52 cards, the sample space for the event of drawing a seven consists of 2 outcomes.
Answer: False
Type: Concept
Difficulty: Easy
7.
The probability of drawing a seven, from a standard deck of 52 cards, is 1/4.
Answer: False
Type: Computation
Difficulty: Easy
8.
If event A consists of the event of drawing a red card from a standard deck of 52
cards, then the complement of event A is the event of drawing a black card from this
deck.
Answer: True
Type: Concept
Difficulty: Easy
9.
The intersection of two sets includes all elements that are part of either set, or both
sets.
Answer: False
Type: Concept
Difficulty: Easy
23
Aczel, Complete Business Statistics, Sixth Edition
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Probability
10.
The probability of event A, an event that is certain to occur, is one.
Answer: True
Type: Concept
Difficulty: Easy
11.
The probability of drawing a card, chosen at random from a standard deck of 52 cards,
which is either a diamond or a club is 0.5.
Answer: True
Type: Computation
Difficulty: Medium
12.
Two events which are mutually exclusive events, are also complements of each other.
Answer: False
Type: Concept
Difficulty: Medium
13.
When two events, A and B, are independent, then the product of their individual
probabilities is equal to the probability that both events occur, or P(A) x P(B) = P(A
∩
B).
Answer: True
Type: Concept
Difficulty: Medium
14.
In order to count the number of ways that a committee of three, including a chair, a
secretary, and a treasurer, could be chosen from a group of ten people, a combination
would be used.
Answer: False
Type: Concept
Difficulty: Medium
15.
The probability of any particular event, or combination of events, can be larger than
one in certain specific cases.
Answer: False
Type: Concept
Difficulty: Easy
16.
The probability of rolling a 7 on a pair of dice is higher than rolling any other number.
Answer: True
Type: Computation
Difficulty: Medium
17.
If the probability of rolling a 2 on a pair of dice is 1/36, the probability of not rolling a
2 is 35/36.
Answer: True
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This note was uploaded on 02/12/2012 for the course ECON 136 taught by Professor Johanek during the Spring '11 term at Boston Architectural.
 Spring '11
 Johanek

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