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Question #e4ec5

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Konstantinos Michailidis

Apr 18, 2017

We have that

p-hat $= \frac{27}{100} = 0.27$ $= 27/100 = 0.27$

The standard error is $E = 1.645 \cdot \sqrt{0.27 \cdot \frac{0.73}{100}} = 0.0730$ $E = 1.645*sqrt[0.27*0.73/100] = 0.0730$

Finally

90% CI: $0.27 - 0.0730 < p < 0.27 + 0.073$ $0.27-0.0730 < p < 0.27+0.073$

90% CI: $0.1970 < p < 0.3430$ $0.1970 < p < 0.3430$

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