Question

In a sample of 560 adults, 336 had children. Construct a 95% confidence interval for the true population proportion of adults with children.

Give your answers as decimals, to three places

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Answer 1

`\{0.559,0.641\}`

Explanation:

`\displaystyle CI_(95\%)=(336)/(560)\pm1.96\sqrt{((336)/(560)(1-(336)/(560)))/(560)}\approx\{0.559,0.641\}`