Question 425948
Using this chart below can you help me figure out if you select a student at random What is the probability of selecting a female student? I am having trouble with probability. Thanks!                              

                                     Major
Gender         Biology       Anatomy         Chemistry            Total
Male             105           140               47                 292
Female           103           25                52                  180
Total            208           165               99                 472
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P(female) = 180/472
P(biology|female) = 103/180
P(male|anatomy) = 140/165
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These are not difficult once you see the pattern.
When you have P(a|b) the number in "b" becomes the denominator.
The number of "a's" in b becomes the numerator.
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Hope that helps
Cheers,
Stan H.