In a major midwestern university,55 percent of all undergraduates are female,25 percent of all undergraduates belong to a Greek organization (fraternity or sorority),and 40 percent of all males belong to a Greek organization.What is the probability that one randomly selected undergraduate will be either a female or belong to a Greek organization?
A).55
B).73
C).80
D).07
E).87

Question

Quizplus · Accepted Answer

The probability that one randomly selected undergraduate will be either a female or belong to a Greek organization is the sum of the probabilities of being female and belonging to a Greek organization. The probability of being female is 0.55, and the probability of belonging to a Greek organization is 0.25. Therefore, the probability of being either female or belonging to a Greek organization is 0.55 + 0.25 = 0.80.

In a Major Midwestern University,55 Percent of All Undergraduates Are