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School
Pace University *
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Course
117
Subject
Mathematics
Date
Jan 9, 2024
Type
Pages
2
Uploaded by BrigadierSparrow3922 on coursehero.com
FALL 2022
FINAL EXAM
TEST REVIEW
Name___________________________________
MAT 117
TEST OF CO
N
CEPTS :
ALL CHAPTERS
1
)
Population parameters are difficult to calculate due to
A)
the fact that samples are difficult to draw due to the nature of the data.
B)
the infeasibility of collecting data on the entire population.
C)
cost prohibitions on data collection.
D)
both cost prohibitions on data collection and the infeasibility of collecting data on the entire
population.
2
)
The estimation of which of the following requires sampling?
A)
U.S. unemployment rate
B)
Total rainfall in Phoenix, Arizona, in 2010
C)
The average SAT score of incoming freshmen at a university
D)
The Cleveland Indians' hitting percentage in 2010
3
)
At the end of a semester college students evaluate their instructors by assigning them to one of the
following categories: Excellent, Good, Average, Below Average, and Poor. The measurement scale is
a(n)
A)
interval scale.
B)
nominal scale.
C)
ordinal scale.
D)
ratio scale.
4
)
Statisticians like precision in their interval estimates. A low margin of error is needed to achieve this.
Which of the following supports this when selecting sample sizes?
A)
A smaller sample size reduces the margin of error.
B)
A larger sample size reduces the margin of error.
C)
A larger sample size increases the margin of error.
D)
A sample size has no impact on the margin of error.
5
)
Which of the following answers represents the objective of a hypothesis test?
A)
Rejecting the null hypothesis when it is true.
B)
Rejecting the null hypothesis when it is false.
C)
Not rejecting the null hypothesis when it is true.
D)
Rejecting the null hypothesis when it is false and not rejecting the null hypothesis when it is true.
6
)
If the chosen significance level is
Į
= 0.05, then ________.
A)
there is a 5% probability of accepting a true null hypothesis
B)
there is a 5% probability of rejecting a false null hypothesis
C)
there is a 5% probability of rejecting a true null hypothesis
D)
there is a 5% probability of accepting a false null hypothesis
1
O
O
O
O
O
O
7
)
For a given sample size and population standard deviation, which of the following is true in the
interval estimation of the population mean?
A)
If the confidence level is greater, the interval is wider.
B)
If the confidence level is greater, the interval is narrower.
C)
If the confidence level is smaller, the interval is wider.
D)
None of the above
8
)
A Type I error occurs when we ________.
A)
do not reject the null hypothesis when it is actually false
B)
do not reject the null hypothesis when it is actually true
C)
reject the null hypothesis when it is actually true
D)
reject the null hypothesis when it is actually false
9
)
A fast-food franchise is considering building a restaurant at a busy intersection. A financial advisor
determines that the site is acceptable only if, on average, more than 300 automobiles pass the location
per hour. The advisor tests the following hypotheses:
H
0
:
ȝ
300.
H
A
:
ȝ
>
300.
The consequences of committing a Type II error would be that ________.
A)
the franchiser builds on an unacceptable site
B)
the franchiser does not build on an acceptable site
C)
the franchiser does not build on an unacceptable site
D)
the franchiser builds on an acceptable site
10
)
If the
p
-value for a hypothesis test is 0.07 and the chosen level of significance is
Į
= 0.05, then the
correct conclusion is to ________.
A)
not reject the null hypothesis if
ı
= 10
B)
not reject the null hypothesis
C)
reject the null hypothesis
D)
reject the null hypothesis if
ı
= 10
2
O
O
O
O
Note
If
p
value
22
reject
Ho
p
value
At
Right
Left
P
value
Tailed
Tailed
2
AREA
Test
Test
Two
Tailed
Test
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