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# 4 state a conclusion a using the pvalue above

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Unformatted text preview: an 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. 4 State a Conclusion A Using the P ­value above and the level of significance, what can you conclude about the null hypothesis? B What can you conclude about the alternative hypothesis? C Interpret the P ­value in the context of this problem. D Interpret your decision in the context of the problem. © 2011 THE CARNEGIE FOUNDATION FOR THE ADVANCEMENT OF TEACHING A PATHWAY THROUGH STATISTICS, VERSION 1.6, STATWAY™  ­ STUDENT HANDOUT STATWAY STUDENT HANDOUT | 3 Lesson 8.3.2 Additional Hypothesis Tests for Population Proportions 5 Suppose α = 0.10. How would this level of significance affect the outcome of this hypothesis test? Global Warming A 2010 Gallup poll revealed that 53% of Americans believe global warming is a serious threat to themselves and their family2. In 2011, a random survey of 150 Americans was conducted and 78 people responded that they believe global warming is a serious threat to themselves and their family. At the 5% level of significance, determine whether the proportion of Americans who view global warming as a threat has decreased? TRY THESE 1 Determine the Hypotheses A State the null and alternative hypotheses. B Will you perform a left ­tailed, right ­tailed, or two ­tai...
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## This document was uploaded on 03/13/2014 for the course MATH 75 at Skyline College.

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