A statistics practitioner took a random sample of 49 observations from a population and computed the sample mean to be 100. For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits.   A. Suppose the population standard deviation is 28. Estimate the population mean with 95% confidence. Confidence Interval =  B. Suppose the population standard deviation is 41. Estimate the population mean with 95% confidence. Confidence Interval =  C. Suppose the population standard deviation is 10. Estimate the population mean with 95% confidence. Confidence Interval =

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