A random sample of 500 males included 215 that approved of the performance of a President.  A random sample of 500 females included 185 that approved of the performance of a President.  Determine each of the following parts that will lead you to construct a 95% confidence interval for the overall difference in the percentage of males and females that approve of the President's performance.   Group one males, group 2 females Calculate p-hat 1 and q-hat 1, Calculate p-hat 2 and q-hat 2 , Calculate (p-hat 1 - p-hat 2)  And Find the critical z-score for a 95% level of confidence

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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A random sample of 500 males included 215 that approved of the performance of a President.  A random sample of 500 females included 185 that approved of the performance of a President. 

Determine each of the following parts that will lead you to construct a 95% confidence interval for the overall difference in the percentage of males and females that approve of the President's performance.  

Group one males, group 2 females

Calculate p-hat 1 and q-hat 1, Calculate p-hat 2 and q-hat 2 , Calculate (p-hat 1 - p-hat 2) 

And Find the critical z-score for a 95% level of confidence

 

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