Find a confidence interval for 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) 1formula63.mml = 27, s = 5, n = 5, 90 percent confidence. The 90% confidence interval is to (b) 1formula63.mml = 44, s = 4, n = 17, 99 percent confidence. The 99% confidence interval is to (c) 1formula63.mml = 110, s = 20, n = 29, 95 percent confidence. The 95% confidence interval is to