Eighty students in a school cafeteria were asked if they favored a ban on smoki the cafeteria. The results of the survey are shown in the table. Class Favor Oppose No Opinie Freshman 15 27 8 Sophomore 23 5

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Chapter1: Combinatorial Analysis
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Problem No. 8
Statement of the Problem:
Eighty students in a school cafeteria were asked if they favored a ban on smoking in
the cafeteria. The results of the survey are shown in the table.
Class
Favor
Oppose
No Opinion
Freshman
15
27
8
Sophomore
23
5
2
If a student is selected at random, find these probabilities:
a. Given that the student is a freshman, he or she opposes the ban.
b. Given that the student favors the ban, the student is a sophomore.
Transcribed Image Text:Problem No. 8 Statement of the Problem: Eighty students in a school cafeteria were asked if they favored a ban on smoking in the cafeteria. The results of the survey are shown in the table. Class Favor Oppose No Opinion Freshman 15 27 8 Sophomore 23 5 2 If a student is selected at random, find these probabilities: a. Given that the student is a freshman, he or she opposes the ban. b. Given that the student favors the ban, the student is a sophomore.
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