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Find a confidence interval for μ assuming that each sample is from a normal population. (Round...

Find a confidence interval for μ assuming that each sample is from a normal population. (Round the value of t to 3 decimal places and your final answers to 2 decimal places.)

(a) x⎯⎯ = 28, s = 5, n = 8, 90 percent confidence. The 90% confidence interval is to

(b) x⎯⎯ = 50, s = 6, n = 15, 99 percent confidence. The 99% confidence interval is to

(c) x⎯⎯ = 111, s = 11, n = 29, 95 percent confidence. The 95% confidence interval is to rev: 05_15_2015_QC_CS-15690

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