Fred and George played fifteen (15) games of goal over course of a year. Fred average (sample mean) a score 76, only four points above par and George average (sample mean) score of 79, only seven points above par; Fred's sample standard deviation of 10 and George's sample standard deviation of 7. At 5% level of significance, test if there is any significant difference (either way) between Fred and George.
Based on the above information, who is the better golfer and why?