A Harris poll asked Americans in 2016 and 2017 if they were happy. In 2016, 31% reported
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A Harris poll asked Americans in 2016 and 2017 if they were happy. In 2016, 31% reported being happy and in 2017, 33% reported being happy. Assume the sample size for each poll was 1000. A 95% confidence interval for the difference in these proportions p1 - p2 (where proportion 1 is proportion happy in 2016 and proportion 2 is the proportion happy in 2017) is (-0.06, 0.02). Interpret this confidence interval. Does the interval contain 0? What does this tell us about happiness among American in 2016 and 2017?
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The 95 confidence interval for the difference in proportions of happy Americans in 2016 and 20...View the full answer
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Related Book For 
Introductory Statistics Exploring The World Through Data
ISBN: 9780135163146
3rd Edition
Authors: Robert Gould, Rebecca Wong, Colleen N. Ryan
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