QM 520 - Chapter 5: Discrete Distributions. Questions and Answers.
iscrete Distributions
C 1. Variables which take on values only at certain points
... [Show More] over a
given interval are called _______.
E A. point variables
Term B. continuous random variables
C. discrete random variables
D. value variables
B 2. A variable that can take on values at any point over a given
interval is called _______.
E A. a point variable
Term B. a continuous random variable
C. a discrete random variable
D. a value variable
83
142 Test Bank
A 3. The number of automobiles sold by a dealership in a day is an
example of _______.
E A. a discrete random variable
Term B. a continuous random variable
C. the binomial distribution
D. the normal distribution
D 4. The amount of time a patient waits in a doctor's office is an
example of _________.
E A. the normal distribution
Term B. the binomial distribution
C. a discrete random variable
D. a continuous random variable
B 5. The volume of liquid in an unopened 12-ounce bottle of beer is
an example of _________.
E A. a discrete random variable
Term B. a continuous random variable
C. the binomial distribution
D. the normal distribution
C 6. The volume of liquid in an unopened 1-gallon can of paint is an
example of _________.
E A. the binomial distribution
Term B. the normal distribution
C. a continuous random variable
D. a discrete random variable
A 7. The number of defective parts in a lot of 25 parts is an example
of _______.
E A. a discrete random variable
Term B. a continuous random variable
C. the Poisson distribution
D. the normal distribution
Chapter 5: Discrete Distributions 143
B 8. You are offered an investment opportunity. Its outcomes and
probabilities are presented in the following table.
X P(X)
-$1,000 .40
$0 .20
+$1,000 .40
The mean of this distribution is _____________.
E A. -$400
BCalc B. $0
C. $200
D. $400
D 9. You are offered an investment opportunity. Its outcomes and
probabilities are presented in the following table.
X P(X)
-$1,000 .40
$0 .20
+$1,000 .40
The standard deviation of this distribution is _____________.
M A. -$400
BCalc B. $663
C. $800,000
D. $894
C 10. You are offered an investment opportunity. Its outcomes and
probabilities are presented in the following table.
X P(X)
-$1,000 .40
$0 .20
+$1,000 .40
Which of the following statements is true?
E A. This distribution is skewed to the right.
BApp B. This is a binomial distribution.
C. This distribution is symmetric.
D. This distribution is skewed to the left. [Show Less]