Approval In November 2011, Barack Obamas approval rating stood at 45% in Rasmussens
Chapter 20, Problem 19(choose chapter or problem)
Approval In November 2011, Barack Obamas approval rating stood at 45% in Rasmussens daily tracking 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 hypothesis that Obamas approval rating was no worse than his November 2009 approval rating of 50%.
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