Construct a 99% confidence interval to estimate the population mean using the data below. x= 17 s=5.4 n=13 What assumptions need to be made about this population? The 99% confidence interval for the population mean is from a lower limit of 12.43 to an upper limit of 21.57 (Round to two decimal places as needed.) What assumptions need to be made about this population? A. The population size is larger than 30. B. The population follows the Student's t-distribution C. The population distribution is skewed to one side, D. The population follows the normal probability distribution