statisticts

Manuel has a mean score of 68 on all his quizzes with a standard deviation of 6. On his most recent quiz, he scored a 59. Is this unusual when compared to how he usually performs on quizzes? Yes, it is unusual because the score of 59 is lower than his mean score of 66. Yes, it is unusual because the score is more than 2 standard deviations away from his mean score. O No, it is not unusual because the score is more than 2 standard deviations away from his mean score. O No, it is not unusual because the score is within 2 standard deviations away from his mean score. O Yes, it is unusual because the score is within 2 standard deviations away from his mean score