SOLUTION: A typical statistics class with 60 students contains 45 females and 25 seniors. Of the seniors 18 are female. If we randomly choose one student from the class, what is the probabil

Question 346105: A typical statistics class with 60 students contains 45 females and 25 seniors. Of the seniors 18 are female. If we randomly choose one student from the class, what is the probability that the selected student is female or a senior?
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
Making a Venn diagram is the easieset way to visualize the following.
45 * 25/60 = 18.75 both seniors and women
45-18.75=26.25 female / non senior
25-18.75=6.25 senior / non female
.
(18.75+26.25+6.25)/60
=51.25/60
=.8542 the probability that the selected student is female or a senior.
.
Ed
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