At a college, 71% of courses have final exams and 46% of courses require research papers....
At a college, 71% of courses have final exams and 46% of courses require research papers. Suppose that 31% of courses have a research paper and a final exam.
part a. Find the probability that a course has a final exam or a research paper.
part b. Find the probability that a course has neither of these two requirements.
Homework Answers
Solution :
(a)
The probability that a course has a final exam or a research paper is
= P(final exams or research paper)
= P(final exams ) + P(research paper) - P(final exams and research paper)
= 0.71 + 0.46 - 0.31
= 0.86
(b)
The probability that a course has neither of these two requirements is ,
= P(neither final exams or research paper)
= 1 - 0.86
= 0.14
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