Three confidence intervals for a population mean are constructed, all from the same random sample. The confidence levels are 95%, 98%, and 99.9%. The confidence intervals are (6.4, 12.3), (5.1, 13.6), and (6.8, 11.9). Match each confidence interval to its level.
What will be an ideal response?
The wider the confidence interval, the greater the confidence level. Therefore the 95% confidence interval is
(6.8, 11.9), the 98% confidence interval is (6.4, 12.3), and the 99.9% confidence interval is (5.1, 13.6).
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