1.Health Maintenance Organizations (HMOs) provide health insurance coverage at a lower premium than traditional health insurances since it limits members coverage to medical care provided through a network of doctors who are under contract with the HMO.It is known that, nationally, doctors working for HMOs average 13.5 years of experience in their specialties, with a standard deviation of 7.6 years. As the new executive director of an HMO in the tri-state area your job is to determine whether or not the doctors in your network have more experience than the national average. A random sample of 150 doctors from your HMO shows a mean of 10.9 years of experience.

a)State the research and the null hypotheses to test whether or not doctors in your HMO have more experience than the national average.

b)Using an alpha level of 0.01, what do you conclude? (show your work).