Chapter 05.3 Exercise Question 13

5.3.13

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 793 men with localized prostate cancer and randomly assigned 328 to surgery and the remaining 465 to observation. All participants were followed for about 10 years. In those 10 years,21 surgery recipients died of prostate cancer related reasons compared to30 observation recipients.

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.

p-value = ?

standardized statistic = ?

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 ??? lower and ??? higher than those that are just observed for 10 years.