A poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming. The results are given in the accompanying data table. Use a
A poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming. The results are given in the accompanying data table. Use a
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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A poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming. The results are given in the accompanying data table. Use a 0.01
significance level to test the claim that the sex of the respondent is independent of the choice for the cause of global warming. Do men and women appear to agree, or is there a substantial difference?
significance level to test the claim that the sex of the respondent is independent of the choice for the cause of global warming. Do men and women appear to agree, or is there a substantial difference?
|
|
|
|
|
|
|
|
Human activity
|
Natural patterns
|
Don't know
|
|
|---|---|---|---|---|
|
Male
|
305
|
151
|
41
|
|
|
Female
|
310
|
170
|
43
|
|
A. Identify the null and alternative hypotheses.
H0:(The sex of the respondent/Respondents who answered yes/The choice for human activity) and (the respondents who answered no/the choice for the cause of global warming/the choice for natural patterns) are (dependent/independent)
H1:(The sex of the respondent/Respondents who answered yes/The choice for human activity) and (the respondents who answered no/the choice for the cause of global warming/the choice for natural patterns) are (dependent/independent)
a2. Compute the test statistic. _____
B. Find the critical value(s).
C. What is the conclusion based on the hypothesis test?
(Reject/Fail to reject) H0. There (is not/is) sufficient evidence to warrant rejection of the claim that the sex of the respondent is independent of the choice for the cause of global warming. Men and women (appear/do not appear) to agree.
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