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OpenStudy (anonymous):
Probability:
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OpenStudy (anonymous):
OpenStudy (anonymous):
add the number of hats
OpenStudy (anonymous):
that would be the denominator
OpenStudy (anonymous):
60
OpenStudy (anonymous):
now take away the white hats
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OpenStudy (anonymous):
and put that number as the numerator
OpenStudy (anonymous):
45
OpenStudy (anonymous):
60-15 = 45
OpenStudy (anonymous):
P(of not getting white) = 45/60
OpenStudy (anonymous):
.75
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OpenStudy (anonymous):
correct .75 as a decimal
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