lesson8-3-2student

6 statway student handout statway student handout

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Unformatted text preview: led test? 2 Collect the Data A Are the conditions for normality met? B Calculate the sample proportion. C Is the sample proportion consistent with the alternative hypothesis? 2 Gallup.com website article, Fewer Americans, Europeans View Global Warming as a Threat, April 20, 2011. © 2011 THE CARNEGIE FOUNDATION FOR THE ADVANCEMENT OF TEACHING A PATHWAY THROUGH STATISTICS, VERSION 1.6, STATWAY™  ­ STUDENT HANDOUT STATWAY STUDENT HANDOUT | 4 Lesson 8.3.2 Additional Hypothesis Tests for Population Proportions D The sample statistics were obtained from a random sample of 150 Americans. Suppose, instead, that the statistics were obtained from a voluntary response sample. Would it be appropriate to use this sample to conduct a hypothesis test? 3 Assess the Evidence A Calculate the mean and standard error of the sampling distribution. B Sketch the sampling distribution with a mean based on the null hypothesis and identify the position of the observed sample statistic. C Calculate the test statistic. D Is the test statistic unusual? E Find the P ­value. F Interpret the P ­Value in the context of this problem. 4 State a Conclusion A Using the P ­value above and the level of significance, what can you conclude about the null hypothesis? © 2011 THE CARNEGIE FOUNDATION FOR THE ADVANCEMENT OF TEACHING A PATHWAY THROUGH STATISTICS, VERSION 1.6, STATWAY™  ­ STUDENT HANDOUT STATWAY STUDENT HANDOUT | 5 Lesso...
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