Question

Please answer all parts to the question(a&b). I will thumbs up!

The Diabetes Control and Complications Trial followed diabetes patients diagnosed with retinopathy before joining the study. They were randomly assigned to one of two treatments and monitored for 6 years. The study found that 128 of the 349 patients assigned to the conventional treatment showed a sustained progression of their original retinopathy. In contrast, only 62 of the 368 patients assigned to the intensive treatment had sustained retinopathy progression. (a) Find a point estimate of the difference between the proportion of conventional treatment patients with sustained retinopathy progression and the proportion of intensive treatment patients with sustained retinopathy progression. (Use 3 decimal places) (b) A 95% confidence interval for the difference in the two proportions, p1 - P2, is (0.135, 0.262). What does this mean? Because the interval contains 0, there is enough evidence at the 0.05 level to conclude that the two proportions are significantly different. Because the interval contains 0, there is not enough evidence at the 0.05 level to conclude that the two proportions are significantly different. Because the interval does not contain 0, there is enough evidence at the 0.05 level to conclude that the two proportions are significantly different. Because the interval does not contain 0, there is not enough evidence at the 0.05 level to conclude that the two proportions are significantly different.

Answer 1

b) Hypothesis Hou Pi-P2 = 0 HT P - P2 to .. 95% confidence interval for the difference in the two proportions, P.-Pz is C0,135, 0.262), this means that Because the interval does not contain 0, there is enough evidence at the 0.05 level to conclude that the two proportioós are significantly different.