Major Grade-Group BiologyNursing Math Accounting Total Students 25 B-Students 40

Question

Major Grade-Group BiologyNursing Math Accounting Total Students 25 B-Students 40 C-Students 40 D-Students 35 H-Students 5 Total 15 40 45 10 10 35 15 25 15 15 25 20 Given the above table, what is the probability that.: (a)if a student is selected at random that the student is a math major? (b) if a student is selected at random that the student is either a math major or a biology major.? © if a student is selected at random that the student is both a nursing ana biology major. (c) if a student is selected at random that the student is an accounting major?

Explanation / Answer

A) P(math major) = (10+15+15+25+5)/(145+115+70+100)

= 70/430

= 0.163

B) P(math major or biology major) = (145+70)/430 = 0.5

C) P(nursing and biology) = 0

D) P(accounting major) = 100/430 = 0.233

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