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seen Oct 9 at 2:12

Nov
8
revised Finding probability 400 components last 5012 or less hours using standard deviation?
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Oct
9
revised Let $P(X=1)=0.6$ and $P(X=1,Y>=5)=0.2$. Find $P(X=1,Y<5)$.
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Oct
9
revised Probability of an unprepared student passes a quiz, 3 of 7 must be correct with 4 possible answers each?
added 10 characters in body
Oct
9
revised Let P(X=3)=0.4 and P(Y=2)=0.5. Find P(X=3,Y=2).
added 81 characters in body
Oct
9
revised Let P(X=3)=0.4 and P(Y=2)=0.5. Find P(X=3,Y=2).
They are not independent.