Consider Problem 7.27 in the textbook. Solve it on your own first, then verify the answer using R.

7.27 Shortly after antibiotics were discovered, medical scientists wanted to determine if streptomycin was effective in the treatment of tuberculosis. At the time, the only treatment for tuberculosis was a long period of bed rest in a sanitarium. In an experiment that we would now consider unethical, scientists divided 107 patients into two groups, with one receiving streptomycin and the control group receiving no treatment beyond bed rest. Of the 55 patients receiving streptomycin, 4 died, while of the 52 patients in the control group, 14 died. Was streptomycin effective in reducing mortality due to tuberculosis? (Data from Marshall et al. 1948)