1. The drug Viagra has become quite well known, and it has had a substantial economic impact on its producer, Pfizer Pharmaceuticals. In preliminary tests for adverse reactions, it was found that when 734 men were treated with Viagra, 16% of them experienced headaches. Among 725 men in a placebo group, 4% experienced headaches. Test the claim that among those men who took Viagra, headaches occurred at rate that is greater than the rate for those who were given a placebo. Use a significance level of 0.01 and a confidence level of 95%. Decide whether toREJECTorFAIL TO REJECTthe claimthat among those men who took Viagra,headachesoccurredatrate that is greater than the rate for those who were given a placebo.(TYPE IN YOUR ANSWER! CHECK YOUR SPELLING!)