Item 1 Exc. 1

The cost of medical care varies in different parts of the United States. A sociologist wanted to conduct a unique study of these medical costs. She randomly sampled doctors in the New England area and asked each doctor where he/she had gone to medical school. She then asked each doctor what he/she charged for the same procedure, a routine well-care physical exam.

The following table gives the charges by four independent samples of doctors who went to medical schools in the four geographical areas of the United States. Went to Medical School In:

Cost of Medical Care

Northeast ($)	Northwest ($)	Southeast ($)	Southwest ($)
95.00	96.00	90.00	118.00
105.00	117.00	85.00	130.00
123.00	110.00	105.00	120.00
115.00	90.00	70.00	125.00
120.00	95.00	80.00	100.00
117.00			121.00
109.00

At the 0.05 level of significance, test to determine if there are any differences in the average charge for a routine well-care physical exam among doctors trained at medical schools in the four geographical areas of the United States.

1. The Null Hypothesis

_________________

1. The Alternate Hypothesis

_________________

1. The significance level of the test

______

1. Pvalue

______

1. Decision based upon test data

1. Reject the Null Hypothesis ii. Do not reject the Null Hypothesis
2. Insufficient Information to make a decision.

_________

1. Decision based upon the data in the words of the question.
2. Complete the ANOVA Table

Source of Variation	SS	df	MS	F	Pvalue
Treatments (Between Groups)
Error (Within Groups)
Total

Enter data to two decimal places with the exception of the pvalue witch should be entered to four decimal places.

1. The value of the Test Statistic

_________

.