所屬科目:研究所、轉學考(插大)◆統計學
4. A researcher is trying to determine how many hours the average student in SCU studies statistics each week. He takes a random sample of 25 individuals and asks each student how many hours he or she studies statistics each week. The following summations were computed: . Find a 95% confidence interval for the mean number of study hours by using a small-sample method.