SOLUTION: in a statistics class there are 18 juniors and 10 seniors; 6 of the seniors are females and 12 of the juniors are males. If a student is selected at random, find the probability o
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Question 405211: in a statistics class there are 18 juniors and 10 seniors; 6 of the seniors are females and 12 of the juniors are males. If a student is selected at random, find the probability of selecting the following.
a. A junior or a female
b. A senior or a female
c. A junior or a senior
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
in a statistics class there are 18 juniors and 10 seniors; 6 of the seniors are females and 12 of the juniors are males.
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class #: 18 jun and 10 sen = 28 students
females: 6 senior: 6 juniors
males::: 4 senior ; 12 juniors
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If a student is selected at random, find the probability of selecting the following.
a. P(A junior or a female) = P(junior)+P(female)-P(junior AND female)
= (18+12-6)/28
= 24/28
= 6/7
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b. P(A senior or a female) = P(senior)+P(female)-P(senior AND female)
= (10+12-6)/28
= 16/28
= 4/7
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Cheers,
Stan H.
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c. A junior or a senior
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