Question

Find the indicated conditional probabilityusing the following two-way table:WalkTake the busGradeDrive to school2253Sophomore13202Junior2555SeniorP( Take the bus Senior ) = [?]

Answer 1

The probability that the student is a senior and take the bus is given by 5/35, where the 5 is the number of students senior who take the bus and 35 is the sum of whole senior class 25+5+5 =35