Question: Construct a confidence interval for assuming that each sample is from a normal population. (a) xx = 25, = 5, n = 10, 90 percentage

Construct a confidence interval for assuming that each sample is from a normal population. (a) xx = 25, = 5, n = 10, 90 percentage confidence. (Round your answers to 2 decimal places.)

The 90% confidence interval is from ? to ?.

(b) xx = 120, = 7, n = 25, 99 percentageconfidence. (Round your answers to 2 decimal places.) The 99% confidence interval is from ? to ?.

(c)xx = 13.2, = 1.9, n = 47, 95 percentage confidence. (Round your answers to 3 decimal places.)

The 95% confidence interval is from ? to ?.

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