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In a survey of 2733 ​adults, 1401 say they have started paying bills online in the...

In a survey of 2733 ​adults, 1401 say they have started paying bills online in the last year.

Construct a​ 99% confidence interval for the population proportion. Interpret the results.

Math   Statistics-And-Probability   
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Answer #1

Given that, n = 2733 and x = 1401

Using TI-84 calculator we get, 99% confidence interval for the population proportion ( p ) is, (0.4880, 0.5372)

That means we are 99% confident that the true population proportion is lies between 0.4880 and 0.5372

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