Question

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? | | Human activity | Natural patterns | Don't know | |--------|----------------|------------------|------------| | Male | 323 | 165 | 46 | | Female | 325 | 144 | 47 | Click here to view the chi-square distribution table. Identify the null and alternative hypotheses. H0: The sex of the respondent and the choice for the cause of global warming are independent. H1: The sex of the respondent and the choice for the cause of global warming are dependent. Compute the test statistic. 1.136 (Round to three decimal places as needed.) Find the critical value(s). 9.210 (Round to three decimal places as needed. Use a comma to separate answers as needed.) What is the conclusion based on the hypothesis test? Reject H0. There 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 do not appear to agree.

          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?

| | Human activity | Natural patterns | Don't know |
|--------|----------------|------------------|------------|
| Male | 323 | 165 | 46 |
| Female | 325 | 144 | 47 |

Click here to view the chi-square distribution table.

Identify the null and alternative hypotheses.
H0: The sex of the respondent and the choice for the cause of global warming are independent.
H1: The sex of the respondent and the choice for the cause of global warming are dependent.

Compute the test statistic.
1.136
(Round to three decimal places as needed.)

Find the critical value(s).
9.210
(Round to three decimal places as needed. Use a comma to separate answers as needed.)

What is the conclusion based on the hypothesis test?
Reject H0. There 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 do not appear to agree.

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?

| | Human activity | Natural patterns | Don't know |
|——–|—————-|——————|————|
| Male | 323 | 165 | 46 |
| Female | 325 | 144 | 47 |

Click here to view the chi-square distribution table.

Identify the null and alternative hypotheses.
H0: The sex of the respondent and the choice for the cause of global warming are independent.
H1: The sex of the respondent and the choice for the cause of global warming are dependent.

Compute the test statistic.
1.136
(Round to three decimal places as needed.)

Find the critical value(s).
9.210
(Round to three decimal places as needed. Use a comma to separate answers as needed.)

What is the conclusion based on the hypothesis test?
Reject H0. There 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 do not appear to agree.

Added by Matthew M.

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