a student from the class and find the probabilities of the following events. (a) A person enrolled in psychology takes all three sub- jects. (b) A person not taking psychology is taking both his- tory and mathematics.

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a student from the class and find the probabilities of
the following events.
(a) A person enrolled in psychology takes all three sub-
jects.
(b) A person not taking psychology is taking both his-
tory and mathematics.
Transcribed Image Text:a student from the class and find the probabilities of the following events. (a) A person enrolled in psychology takes all three sub- jects. (b) A person not taking psychology is taking both his- tory and mathematics.
2.77 In the senior year of a high school graduating
class of 100 students, 42 studied mathematics, 68 stud-
ied psychology, 54 studied history, 22 studied both
mathematics and history, 25 studied both mathematics
and psychology, 7 studied history but neither mathe-
matics nor psychology, 10 studied all three subjects,
and 8 did not take any of the three. Randomly select
Transcribed Image Text:2.77 In the senior year of a high school graduating class of 100 students, 42 studied mathematics, 68 stud- ied psychology, 54 studied history, 22 studied both mathematics and history, 25 studied both mathematics and psychology, 7 studied history but neither mathe- matics nor psychology, 10 studied all three subjects, and 8 did not take any of the three. Randomly select
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