14.4 An employer wanted to find out if changing from his current health benefit policy to a prepaid policy would change hospitalization rates for his employees. A random sample of 100 employees was selected for the study. During the previous year under the current policy, 20 of them had been hospitalized and 80 had not been hospitalized. These same 100 employees were then placed on the prepaid policy and after 1 year, it was found that among the 20, 5 had been rehospitalized, and among the 80, 10 had been hospitalized. Test to see whether the prepaid policy reduces hospitalization rates among the employees.