Question

If n=210 and ˆpp^ (p-hat) =0.74, find the margin of error at a
90% confidence level

Give your answer to three decimals

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Answer #1

Solution :

Given that,

Point estimate = sample proportion = = 0.74

Z_{/2}
= 1.645

Margin of error = E = Z_{
/ 2} *
((
* (1 -
)) / n)

= 1.645 * (((0.74 * 0.26) / 210)

= **0.050**

Margin of error = E = **0.050**

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Give your answer to three decimals

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Give your answer to three decimals

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