SOLUTION: A poll is taken of 1,000 adults after each election. In a report construct 95% confidence intervals of the relevant population proportion to: Compare the approval rates of Presiden

Question 796681: A poll is taken of 1,000 adults after each election. In a report construct 95% confidence intervals of the relevant population proportion to: Compare the approval rates of President Obama's handling of the oil spill and President Bush's handling of Hurricane Katrina
AUGUST 2011 - MARCH 2006
APPROVE 50% - 36%
DISAPPROVE 38% - 53%
NOT SURE 12% - 11%

Please help..
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A poll is taken of 1,000 adults after each election. In a report construct 95% confidence intervals of the relevant population proportion to: Compare the approval rates of President Obama's handling of the oil spill and President Bush's handling of Hurricane Katrina
AUGUST 2011 - MARCH 2006
APPROVE 50% - 36%
DISAPPROVE 38% - 53%
NOT SURE 12% - 11%
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I ran the approval %ages on my TI-84
using the 2-PropZInt function and got
the following 95% confidence interval.
(-0.0166,0.2500)
-----
Conclusion: Since 0 is in the interval
the conclusion would be that the percentages
are statistically the same.
Cheers,
Stan H.
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