multiple choice questions on advanced placement exams have five options: A,B,C,D, and E. A random sample of the correct choice on 400 multiple choice questions on a variety of AP exams show that b was the most common correct choice, with 90 of the 400 questions having b as the answer. does this provide evidence that b is more likely to be the correct choice that would be expected if all five options were equally likely? state the null and alternative. calculate the test statistic and p value. the answer before was wrong