At a particular university, all classes start on the hour, with the earliest start time at 7 a.m. and the latest start time at 8 p.m. A random sample of freshmen showed the percentages of freshman preferring the listed start times. Find the probability that a freshman at this university would prefer an afternoon class time (class time starting at 12 noon to 4 p.m.). Class Start 9, 10, or 11 12 or 1 2, 3, or 4 5 p.m. or 7 or 8 a.m. Time a.m. p.m. p.m. later % Preferring 10% 22% 34% 21% 13% O 34% O 55% O 66% O 68% O 71%