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COURSE:
MSCI 3700
Name:
EXAM 1
S.S.#:
INSTRUCTOR:
Dr. Spalding
SEMESTER:
FALL 97
Consider the following data for answering the next 6 questions.
8,
1,
5,
1,
7,
7,
3
1. Calculate the value of the Mean from the data.
a.
5
b.
8
c.
0
d.
10
e.
8
2.
What is the value of the Median?
a.
1
b.
12
c.
5
d.
10
e.
1
3.
Select the number of modes
a.
No Mode
b.
Unimodal
c.
Bimodal
4.
What is the value of the Variance?
a.
28.40
b.
10
c.
5
d.
33
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33
5.
What is the value of the Standard deviation?
a.
5.05
b.
5.74
c.
10.00
d.
5.77
e.
7.33
6.
What is the value of the Range?
a.
18
b.
15
c.
10
d.
12
e.
15
7.
Suppose that 20% of all college students smoke cigarettes. A sample of 18 is selected
randomly.
What is the probability that between 1 and 4 ( inclusive ) students smoke?
a.
3.6
b.
0.7284
c.
0.6984
d.
0.2355
e.
4.0
8.
A student takes an exam containing 11 multiple choice questions. The probability of
choosing a correct answer by knowledgeable guessing is 0.4.
If the student makes knowledgeable guesses, what is the probability that he will get
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 Fall '11
 Pavur

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