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Spring 2011
FORM F
Name
Last: ___________________
First: __________________
Exam 1:
Chapters 1, 2, 3
Class Time: ________________________
Directions:
•
Turn your cell phone OFF.
•
Print your NAME and CLASS TIME on THIS EXAM.
•
Print your NAME and CLASS TIME on your SCANTRON.
• Write FORM F on your SCANTRON.
• Each question has exactly one BEST answer.
There are 21 questions.
• You may write on this exam.
There is no scratch paper allowed.
• Each question is worth 5 points for a total of 105 points. This includes 5 bonus points!
• If you have no note page, you must write NO NOTES
on your SCANTRON.
• Put your SCANTRON and PAGE of NOTES inside your EXAM.
Before you start packing up your
things, turn in your EXAM and SCANTRON. Then go back to your desk to pack up your
materials.
When your exam is returned, you will get back all materials you turned in.
__________________________________________________________________________________________
Questions 1 – 3 refer to the following:
Suppose we are interested in the percent of ALL homes in Santa Clara County with a
complete emergency kit.
A survey is conducted using a sample of 120 homes from Santa
Clara County.
1.
The PARAMETER is
A.
The percent of homes in the sample with a complete emergency kit.
B.
The percent of homes in Santa Clara County with a complete emergency kit.
C.
The number of homes in the sample with a complete emergency kit.
D.
The number of homes in Santa Clara County with a complete emergency kit.
2.
The VARIABLE is
A.
The proportion of homes in the sample with a complete emergency kit.
B.
The number of homes in the sample with a complete emergency kit.
C.
The proportion of homes in Santa Clara County with a complete emergency kit.
D.
The number of homes in Santa Clara County with a complete emergency kit.
3.
The sample of 120 homes consisted of all homes on 4 randomly selected streets in Santa
Clara County.
This is an example of
A.
Cluster sampling.
B.
Simple random sampling.
C.
Stratified sampling.
D.
Systematic sampling.
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View Full DocumentQuestions 4 – 6 refer to the following:
The following table gives the number of earthquakes (worldwide) measuring 3.0 or more
by Richter scale from January 1 – March 17 of the indicated years.
(earthquake.usgs.gov/earthquakes/eqinthenews)
2011
2010
2009
2008
TOTAL
3.0 – 3.9
0
1
2
0
3
4.0 – 4.9
4
3
3
1
11
5.0 – 5.9
1
2
1
1
5
6.0 – 6.9
9
10
4
10
33
7.0 – 7.9
5
3
5
2
15
8.0 – 8.9
0
0
0
0
0
9.0 – 9.9
1
0
0
0
1
TOTAL
20
19
15
14
68
4.
Find the probability that a randomly chosen earthquake measured 6.0 – 6.9 on the Richter
scale AND occurred in 2010.
A.
68
42
B.
68
33
C.
68
19
D.
68
10
5.
Find the probability that a randomly chosen earthquake measured 7.0 – 7.9 on the Richter
scale OR occurred in 2008.
A.
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 Fall '11
 Plum
 Statistics

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