question archive Researchers Wilt et al
Researchers Wilt et al
Subject:StatisticsPrice: Bought3
Researchers Wilt et al. (New England Journal of Medicine, 2012) investigated whether surgery, compared to just observation, was (more) effective in improving men's survival chances after being diagnosed with prostate cancer. The researchers identified 678
men with localized prostate cancer and randomly assigned 358
to surgery and the remaining 320
to observation. All participants were followed for about 10 years. In those 10 years, 20
surgery recipients died of prostate cancer related reasons compared to 28
observation recipients.
Q1: Use an appropriate applet to find a theory-based p-value to test the your hypotheses. Report the standardized statistic as well as the p-value.
Q2: Use an appropriate applet to find a theory-based 99% confidence interval and interpret the resulting interval in the context of the study.
We can be 99% confident that the probability of dying of prostate cancer for those that get surgery is between.
