In August 2008, a clinical study in the US National Institutes of Health was stopping because of unexpected results. The study population consisted of HIV-infected women in sub-Saharan Africa who had been given single dose Nevaripine (a treatment for HIV) while giving birth, to prevent transmission of HIV to the infant. The study was a randomized comparison of continued treatment of a woman (after successful childbirth) with Nevaripine vs Lopinavir, a second drug used to treat HIV. 300 women participated in the study; 150 were randomized to each of the two treatments. Twenty- four weeks after starting the study treatment, each woman was tested to determine if the HIV infection was becoming worse (an outcome called virologic failure). Thirty-nine of the 150 women treated with Nevaripine experienced virologic failure, while 15 of the 150 women treated with the other drug experienced virologic failure (a) [1] Create a two-way table presenting the results of this study. (b) [1] State appropriate hypotheses to test for difference in virologic failure rates between treatment groups. (c) [1] Complete the hypothesis test and state an appropriate conclusion