Swim Ryan Murphy, nephew of the author, swims for U.S.A.
Swimming. While he was in college at the University of
California at Berkeley, Ryan’s best time in the 100-meter
backstroke was 45.3 seconds. The mean of all NCAA swimmers
in this event is 48.62 seconds with a standard deviation of
0.98 second. Ryan’s best time in the 200-meter backstroke was
99.32 seconds. The mean of all NCAA swimmers in this event is
106.58 seconds with a standard deviation of 2.38 seconds. In
which race was Ryan better in college?