Giving a test to a group of students, the grades and gender are summarized below
A B C Total
Male 15 6 5 26
Female 14 16 10 40
Total 29 22 15 66
If one student is chosen at random,
Find the probability that the student was NOT a male that got a "A"
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The full population is 66 persons (! They just calculated it for you in their table - many thanks !)
The favorable set to choose from is the entire population except those 15 male that got A.
Hence, the probability under the question is
=
= =
= 0.7727 = 77.27%.