In a study of 821 randomly selected medical malpractice lawsuits, it was found that 516 of them were dropped or dismissed. Use a 0.05 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed. Which of the following is the hypothesis test to be conducted? O A. Ho: p # 0.5 O B. Ho: P= 0.5 H1: p =0.5 H1: p 0.5 H1: p= 0.5 O E. Ho: p > 0.5 OF. Ho: p = 0.5 H1 : p = 0.5 H1: p#0.5 What is the test statistic? Z= (Round to two decimal places as needed.)