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For the following questions construct the indicated confidence interval for the population mean. Note c =...

For the following questions construct the indicated confidence interval for the population mean. Note c = confidence level, x ̅ which is equal to the sample mean, s = standard deviation, and n = sample size

a. c = 0.90, x ̅ = 12.3, s = 1.5, n = 50

b. c = 0.99, x ̅ = 10.5, s = 2.14, n = 45

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