A random sample of 20 Australian universities was selected as part of a study on the average enrolments of international students for T1 2022, and the enrolments were recorded for each individual university in the sample. The sample average enrolments of the international students was found to be = 246 for T1 2022 a. Assuming that the variable international student enrolments is normally distributed with a sample standard deviation of 32, calculate a 95% confidence interval for the mean international student enrolments