A statistics class for engineers consists of 25 industrial, 10 mechanical, 10 electrical, and 8 civil engineering students. If a person is randomly selected by the instructor to answer a question, find the probability that the student chosen is
(a) an industrial engineering major and
(b) a civil engineering or an electrical engineering major.
Answers
Given : A statistics class for engineers consists of 25 industrial, 10 mechanical, 10 electrical, and 8 civil engineering students. If a person is randomly selected by the instructor to answer a question,
To find : the probability that the student chosen is
(a) an industrial engineering major and
(b) a civil engineering or an electrical engineering major.
Solution:
Industrial = 25
Mechanical = 10
Electrical = 10
Civil = 8
Total = 25 + 10 + 10 + 8 = 53
probability that the student chosen is an industrial engineering major
= 25/53
probability that the student chosen is a civil engineering or an electrical engineering major.
= (8 + 10)/53
= 18/53
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