Recall the data from the Physicians€™ Health Study: Of the 11,034 physicians who took the placebo, 138 developed ulcers during the study. Of the 11,037 physicians who took aspirin, 169 developed ulcers.

a. Recall that the formula for the standardized statistic in this scenario is

Plug in relevant numbers into this formula and verify the value of the standardized statistic obtained using the applet.

b. Recall that the formula for the confidence interval in this  scenario is

Plug in relevant numbers into this formula and verify the value of the 95% confidence interval obtained using the applet.

Transcribed Image Text:

Pi - P2 P2 P(1 – ) П2 п (P (1 – P1) , P2(1 – P2)' Pi - P2 + multiplier ×. +. п П2