Could someone help with my homework question?
Recovery time for knee surgery patients that do physical therapy three times per week on average is 16.3 weeks with a standard deviation of 2.4. A physical therapist believes that less is more, and that a patient will recover quicker with physical therapy only two times per week. A sample of 53 patients who had the same knee surgery did physical therapy two times per week resulting in an average of 14.8 - week recovery time. Test the hypothesis.