Exam
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Which of the following is true about a probability distribution?
A) The sum of all possible outcomes must equal 1.
B) The outcomes do not need to be mutually exclusive.
C) The probability of each outcome must be between 0 and 1, inclusive.
D) The representation must be graphed, not tabular or algebraic.
1)
2) Consider the following probability distribution. Which of the following is true?
x
0
1
2
3
4
5
6
P
(
x
)
0.07
0.19
0.23
0.17
0.16
0.14
0.04
A)
P
(
X
>
3)
=
0.51
B)
P
(2
≤
X
≤
5)
=
0.33
C)
P
(
X
<
6)
=
1D
)
P
(
X
≥
3)
=
0.51
2)
THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The following table presents the probability distribution function for the number of claims processed per hour at an
insurance agency.
# of claims
2
3
4
5
6
7
P
(
x
)
0.11
0.16
0.27
0.23
0.13
0.10
3) What is the average number of claims processed?
A) 4.81
B) 4.67
C) 4.23
D) 4.41
3)
THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The probability that a person catches a cold during the cold and flu season is 0.4. Assume that 10 people are chosen at
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 Spring '10
 Thom
 Poisson Distribution, Probability, #, ten minutes, flu, insurance agency

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