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We wish to estimate what percent of adult residents in a certain county are parents. Out...

We wish to estimate what percent of adult residents in a certain county are parents. Out of 500 adult residents sampled, 400 had kids. Based on this , construct a 90% confidence interval for the proportion of sdult residents who are parents in this country.
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Given that:-

We wish to estimate what percent of adult residents in a certain county are parents. Out of 500 adult residents sampled, 400 had kids. Based on this , construct a 90% confidence interval for the proportion of adult residents who are parents in this country.

Sample Proportion = 400/500=0.8

Margin of error

90% of interval

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