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19. Approval 2011 In November 2011, Barack Obama's approval rating stood at 45% in Rasmussen's daily track- ing poll of 1500 randomly surveyed U.S. adults. a) Make a 95% confidence interval for his approval rating by all U.S. adults. b) Based on the confidence interval, test the null hypoth- esis that Obama's approval rating was no worse than his November 2009 approval rating of 50%.

19. Approval 2011 In November 2011, Barack Obama's approval rating stood at 45% in Rasmussen's daily track- ing poll of 1500 randomly surveyed U.S. adults. a) Make a 95% confidence interval for his approval rating by all U.S. adults. b) Based on the confidence interval, test the null hypoth- esis that Obama's approval rating was no worse than his November 2009 approval rating of 50%.

MATLAB: An Introduction with Applications
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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Lesson 6: Using Confidence Intervals to Test Hypotheses Read your textbook p524, the section entitled "Confidence Intervals and Hypothesis Tests". Complete the following problems from Chapter 20 (p537) of your textbook. You must show all of your work. 19. Approval 2011 In November 2011, Barack Obama's approval rating stood at 45% in Rasmussen's daily track- ing poll of 1500 randomly surveyed U.S. adults. a) Make a 95% confidence interval for his approval rating by all U.S. adults. b) Based on the confidence interval, test the null hypoth- esis that Obama's approval rating was no worse than his November 2009 approval rating of 50%. Ⓒ Success Academy Charter Schools 2021-2022 AP Statistics Unit 5
Transcribed Image Text:Lesson 6: Using Confidence Intervals to Test Hypotheses Read your textbook p524, the section entitled "Confidence Intervals and Hypothesis Tests". Complete the following problems from Chapter 20 (p537) of your textbook. You must show all of your work. 19. Approval 2011 In November 2011, Barack Obama's approval rating stood at 45% in Rasmussen's daily track- ing poll of 1500 randomly surveyed U.S. adults. a) Make a 95% confidence interval for his approval rating by all U.S. adults. b) Based on the confidence interval, test the null hypoth- esis that Obama's approval rating was no worse than his November 2009 approval rating of 50%. Ⓒ Success Academy Charter Schools 2021-2022 AP Statistics Unit 5
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