Calculate the confidence interval for this problem. A sample of 64 observations is taken from a normal population. The sample mean is 55, and the...

Calculate the confidence interval for this problem.A sample of 64 observations is taken from a normal population. The sample mean is 55, and the sample standard deviation is 10. Determine the 95% confidence interval for the population mean. You can use the manual formula found in the text, or if you know how to do so, you can use Excel or megastat functions to complete the work. Show your work in excel so that I can determine how you arrived at your confidence interval numbers.