Suppose that 10 sophomores enter a belching contest and that their respective skill levels are approximately the same.Six of the entrants are female and two of those are engineering majors.Three of the men are engineers.What is the probability that the winner will be either female or majoring in something other than engineering?
A)0.10
B)0.30
C)0.70
D)0.90

Question

Quizplus · Accepted Answer

Total number of entrants = 10
Number of females = 6
Number of female engineers = 2
Number of male engineers = 3
Therefore, the number of entrants who are not female or engineering majors = 10 - 6 - 2 - 3 = 1
The probability of the winner being female or majoring in something other than engineering = (6/10) + (1/10) = 0.7, so the best choice is (C).

Suppose That 10 Sophomores Enter a Belching Contest and That