In a 2018 article published in The Lancet, Sprigg et al. studied the effect of tranexamic acid in treating patients with intracerebral hemorrhages using a randomized, placebo controlled trial. Of the 1161 subjects treated with tranexamic acid, 383 suffered an adverse outcome after 2 days. Of the 1164 subjects given a placebo, 419 suffered an adverse outcome after 2 days.

a. Find the percentage in each group that suffered an adverse outcome. Round off to one decimal place as needed.

b. Create a two-way table with the treatment labels (drug/placebo) across the top.

c. Test the hypothesis that treatment and adverse outcome are associated using a significance level of 0.05.