Posted by Jen on Tuesday, July 19, 2011 at 5:30pm.
Mr. Doodle’s grade distribution over the past 3 years for a course in college algebra is shown in the chart below.
Grade Number
A 45
B 180
C 110
D 95
F 65
I 5
If Jane plans to take a college algebra course with Mr. Doodle, determine the empirical probability that she receives at least a B.

Math  Henry, Wednesday, July 20, 2011 at 3:20pm
P = 180 / (45+180+110+95+5) = 180/500 =
9/25 = 0.36.