Curing diabetes:Vertical banded gastroplasty is a surgical procedure that reduces the volume of the stomach in order to produce weight loss. In a recent study, 82 patients with Type 2

diabetes underwent this procedure, and

59

of them experienced a recovery from diabetes. Does this study provide convincing evidence that the percentage of those with diabetes who undergo this surgery will recover from diabetes differs from

56%

? Use the = 0.01 level of significance and the

P-value method with the TI-84 Plus calculator.

Part 1 of 4

(a) State the appropriate null and alternate hypotheses.

:H0 :H1 This hypothesis test is a left, right, or two tailed test ?

2. What is the P- value?

3. Do we reject or fail to reject ?

4. Do we have enough evidence to conclude?