We consider the sleep habits of medical students and non-medical students. The study consists of the hours of sleep per day obtained from nj 30 medical students and 733 non-medical students. The mean hours of sleep per day of medical students is X15.1 and the standard deviation is S, 0.75. The mean hours of sleep per day of non-medical students is X 6.2 and the standard deviation is 5 1.84. Test the claim that the mean hours of sleep for medical and non-medical students is different. Use a 0.1 significance level
What is the negative critical region? Give your answer to three decimal places.
