Question

Giving a test to a group of students, the grades and gender are summarized below

A B C Total
Male 6 5 8 19
Female 11 13 19 43
Total 17 18 27 62


If one student is chosen at random,

Find the probability that the student got a C:


Find the probability that the student was male AND got a "B":


Find the probability that the student was female OR got an "A":

Answer 1

"Find the probability that the student got a C"
- looks like there were 27 out of a total of 62 who got a C, so .....

"Find the probability that the student was male AND got a "B"
- according to your chart there were 5 males out of the 62 who got a B, so ....

"Find the probability that the student was female OR got an "A"
- total females = 43, total who got A = 17, females with an A = 11
so total females OR A = 43+17-11 = ....
so ........