SOLUTION: In a Gallup poll of 557 randomly selected adults, 284 said that they were
underpaid. Construct a 95% confidence interval estimate for the proportion
of adults who say they are
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underpaid. Construct a 95% confidence interval estimate for the proportion
of adults who say they are
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Question 1112631: In a Gallup poll of 557 randomly selected adults, 284 said that they were
underpaid. Construct a 95% confidence interval estimate for the proportion
of adults who say they are underpaid. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! In a Gallup poll of 557 randomly selected adults, 284 said that they were
underpaid. Construct a 95% confidence interval estimate for the proportion
of adults who say they are underpaid.
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sample proportion = 284/557 = 0.5099
Margin of Error = z*sqrt(pq/n) = 1.96*sqrt[0.5099*0.4901/557] = 0.0415
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95% CI:: 0.5099-0.0415 < p < 0.5099+0.0415
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Cheers,
Stan H.
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