Compute the test statistic and p value ### Analysis of Opinions on the Causes of Global WarmingA poll was conducted to investigate opinions about global warming. Respondents who affirmed that there is solid evidence that the earth is getting warmer were further asked to select a cause of global warming. The results are summarized in the accompanying data table below. This study utilizes a 0.05 significance level to examine if the sex of the respondent is independent of their belief regarding the cause of global warming. The question to address is whether men and women have similar opinions on this topic or if there is a substantial difference.| | Human Activity | Natural Patterns | Don't Know ||---------------|----------------|------------------|------------|| **Male** | 315 | 164 | 75 || **Female** | 316 | 140 | 70 |In this table:- "Human Activity" refers to responses attributing global warming to human activities.- "Natural Patterns" refers to responses attributing it to natural climate variability.- "Don't Know" refers to respondents who were uncertain about the cause.The data table provides a comparative look at how male and female respondents distributed their opinions across the potential causes for global warming. Researchers can use this data to perform statistical tests, such as a Chi-square test for independence, to identify if there are any significant differences in opinion based on gender.**Key Questions for Analysis:**1. Are the proportions of men and women who believe in human activity as the cause of global warming statistically different?2. Do men and women differ significantly in attributing global warming to natural patterns?3. Is there a difference in the proportion of respondents who are uncertain about the cause?Conducting such an analysis will help to understand the relationship between gender and opinions on global warming causes, informing further educational and policy-making efforts.

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 0.05 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 164 Male 315 75 Female 316 140 70

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 0.05 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 164 Male 315 75 Female 316 140 70

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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40 people are randomly sent to walk one of four trails. The time (in minutes) they spend completing each trail is recorded in the table below. (a) Test to see if the times needed to complete a trail vary. Use a 0.05 significance level. (b) Test each pair (A/B, A/C, A/D, B/C, B/D, C/D) to see which trails have a statistically significant difference. Indicate your p-value for each comparison, and when the effect is statistically significant (use 0.05 as your significance level), declare which trail of the two takes more time to complete. Trail A - 30, 33, 41, 27, 36, 31, 37, 40, 29, 35 Trail B - 27, 33, 38, 41, 40, 38, 35, 44, 41, 39 Trail C - 25, 34, 41, 39, 32, 30, 36, 35, 27, 33 Trail D - 41, 39, 46, 37, 40, 42, 50, 42, 50, 33, 47, 43
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A business has just completed a marketing campaign. They want to determine if their original market share of 50% has increased as a result of the campaign. A survey conducted found 81 out of 150 people had bought the products. Determine whether the company has increased its market share - Use either the p-value or the z statistic conduct the test. Has the market share of the company increased?- The marketing team plan to continue to monitor their market share. In a future study, they want to be able to estimate their market share to within +/−5% and with 90% confidence. What size sample is required? Use the sample proportion from part ii.
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Perform a hypothesis test for a population mean and for a population proportion A group of psychologists commented that less than 57% of them help children to enjoy reading to improve their intelligence. An investigation was conducted to find out if this is true in a certain school zone. 210 psychologists were randomly chosen and interviewed to detect whether, by developing their work in psychology, they help children to enjoy reading to improve their intelligence; It was found that 105 psychologists do help children. Perform the hypothesis test with alpha of 10%.
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Only 42% of registered voters voted in the last election. Will there be a change in voter participation for the upcoming election? Of the 692 randomly selected registered voters surveyed, 315 of them will vote in the upcoming election. What can be concluded at the 0.10 level of significance? Helpful Videos:Calculations, Set-up □, Interpretations ‹ Hint Textbook Pages Ho: p = 0.42 Ha: p [Select] 0.42 Test statistic: [Select] p-Value = [ Select] [Select] Conclusion: There is [Select] evidence to make the conclusion that the percentage of registered voters who will vote in the upcoming election will not be 42%.