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Find a 95 Percent Confidence Interval for the Difference Between p^1\hat { p } _ { 1 }

Question 115

Essay

Find a 95 percent confidence interval for the difference between the proportions of older and younger drivers who have tickets,where p^1\hat { p } _ { 1 }
= .275, p^2\hat { p } _ { 2 }
= .25,n1 = 1000,n2 = 1000.

Correct Answer:

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[0.000,.0636]
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