In an effort to promote the 'academic' side of Texas Woman's University (pop. 12,000), a recent study of 359 students showed that the average student spent 4.1 nights a month with a standard deviation of 0.5 nights involved in an alcohol related event. What can you accurately report to the parents of potential/incoming freshman to the university as to the number of nights a typical student spends in an alcoholic environment? The 95% confidence interval is between: