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Construct a confidence interval

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Reference no: EM132857388

Mean Number of Years of Education by Class Mean St Dev N

Working class 12.8. 2.85 697

Middle class 14.45. 3.08 626

Using the above data, construct a 95% confidence interval for education for both working AND middle class.

Now construct a 99% confidence interval for both.

How does the size of the confidence interval change as our confidence in the results increase?

Reference no: EM132857388

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