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If n=300 and p^ (p-hat) = 0.38, construct a 99% confidence interval. Give your answers to...

If n=300 and p^ (p-hat) = 0.38, construct a 99% confidence interval.

Give your answers to three decimals.

____< p <____

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Answer #1

99% confidence interval for p is

- Z/2 * sqrt [ ( 1 - ) / n ] < p < + Z/2 * sqrt [ ( 1 - ) / n ]

0.38 - 2.576 * sqrt ( 0.38 ( 1- 0.38) / 300) < p < 0.38 + 2.576 * sqrt ( 0.38 ( 1- 0.38) / 300)

0.308 < p < 0.452

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