Launchpad For Moore's Statistics: Concepts And Controversies (twelve Month Access)
9th Edition
ISBN: 9781464192982
Author: Moore, David S., Notz, William I.
Publisher: W. H. Freeman
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Chapter 1, Problem 1CS
To determine
Whether the poll is a sample survey, a census, or an experiment.
Expert Solution & Answer
Answer to Problem 1CS
Solution: The provided online poll is a sample survey.
Explanation of Solution
Given: Question asked in the online poll is “Should Michigan legalize marijuana?” There are 9684 respondents among which 7906 (81.64%) said Yes, 1190(12.29%) said No, and 588 (6.07%) said decriminalize but not legalize.
Justification for correct answer:
The study is a sample survey because the response is collected from 7906 individuals, while all individuals who use the Internet are eligible subjects for the study.
Justification for incorrect answers:
The study is not a census because census data contains the information of the entire population. However, in the provided study, the responses are not collected from the entire population.
The provided study is not an experiment because no treatment is applied to the subjects of the study before collecting the data.
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Calculate the 90% confidence interval for the population mean difference using the data in the attached image. I need to see where I went wrong.
Microsoft Excel snapshot for random sampling: Also note the formula used for the last
column
02
x✓ fx =INDEX(5852:58551, RANK(C2, $C$2:$C$51))
A
B
1
No.
States
2
1
ALABAMA
Rand No.
0.925957526
3
2
ALASKA
0.372999976
4
3
ARIZONA
0.941323044
5
4 ARKANSAS
0.071266381
Random Sample
CALIFORNIA
NORTH CAROLINA
ARKANSAS
WASHINGTON
G7
Microsoft Excel snapshot for systematic sampling:
xfx INDEX(SD52:50551, F7)
A
B
E
F
G
1
No.
States
Rand No. Random Sample
population
50
2
1 ALABAMA
0.5296685 NEW HAMPSHIRE
sample
10
3
2 ALASKA
0.4493186 OKLAHOMA
k
5
4
3 ARIZONA
0.707914 KANSAS
5
4 ARKANSAS 0.4831379 NORTH DAKOTA
6
5 CALIFORNIA 0.7277162 INDIANA
Random Sample
Sample Name
7
6 COLORADO 0.5865002 MISSISSIPPI
8
7:ONNECTICU 0.7640596 ILLINOIS
9
8 DELAWARE 0.5783029 MISSOURI
525
10
15
INDIANA
MARYLAND
COLORADO
Chapter 1 Solutions
Launchpad For Moore's Statistics: Concepts And Controversies (twelve Month Access)
Ch. 1 - Prob. 1CSCh. 1 - Prob. 2CSCh. 1 - Prob. 3CSCh. 1 - Prob. 4CSCh. 1 - Prob. 5CSCh. 1 - Prob. 1CTBCh. 1 - Prob. 2CTBCh. 1 - Prob. 3CTBCh. 1 - Prob. 4CTBCh. 1 - Prob. 5CTB
Ch. 1 - Prob. 6CTBCh. 1 - Prob. 7CTBCh. 1 - Prob. 8ECh. 1 - Prob. 9ECh. 1 - Prob. 10ECh. 1 - Prob. 11ECh. 1 - Prob. 12ECh. 1 - Prob. 13ECh. 1 - Prob. 14ECh. 1 - Prob. 15ECh. 1 - Prob. 16ECh. 1 - Prob. 17ECh. 1 - Prob. 18ECh. 1 - Prob. 19ECh. 1 - Prob. 20ECh. 1 - Prob. 21ECh. 1 - Prob. 22ECh. 1 - Prob. 23E
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