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Statistics: Probability

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Of the students who have registered for a statistics class, 20% are business majors, 30% are finance majors, and
the remainder are economics majors. 60% of the business majors are graduate students, 40% of finance majors
are graduate students, and 30% of the economics majors are graduate students.
(a) (4 points)What percentage of the students in this class are graduate students?
(b) (4 points) Given that a randomly chosen student is a graduate student, what is the probability that he/she is
an economics major?

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A Complete, Neat and Step-by-step Solution is provided with regards to the statistical probability of a statistics class.

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Let the class have 100 students. Then from the given data, we have the ...

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