The prerequisite for a required course is that students must have taken either course A or course B. By the time they are juniors, 52% of the students have taken course A 29% have had course B, and 15% have done both a) What percent of the juniors are ineligible for the course? b) What's the probability that a junior who has taken course A has also taken course ? c) Are taking these two courses disjoint events? Explain d) Are taking these two courses independent events? Explain