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Final Practice Problems - FR - Answers

Final Practice Problems - FR - Answers - Final Practice...

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Final Practice Problems Free Response - Answers Question 1 In a worldwide survey, people were asked whether they believe in global warming. Of the 2,000 participants living near the arctic circle, 1,660 said that they believe in global warming. Of the 3,000 participants living near the equator, 2,400 said that they believe in global warming. a) Does the area in which a person lives affect their belief in global warming? Test an appropriate hypothesis at the 1% significance level. ̂ ̂ ( ) ( ) ( ) ( ) ̂ ̂ (| | ) ( ) ( )
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Final Practice Problems Free Response - Answers There is a statistically significant difference between the proportion of people from the arctic circle who believe in global warming and the proportion of people from the equator who believe in global warming at the 1% significance level. Therefore, I reject the null hypothesis and conclude that the area in which a person lives does affect their opinion.
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