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Events X and Y are independent. If P(X) = 0.4 and P(Y) = 0.3, find P(X and Y). Show work please?
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- Anonymous4 years ago
The definition of independence means that P(X and Y) = P(X) times P(Y).
I won't insult your intelligence by going any further.
- ?Lv 74 years ago
P(X and Y) = P(X) + P(Y) - P(X n Y)
= .4 + .3 - P(X) * P(Y) ... P(X n Y) = P(X) * P(Y) because of independence
= .7 - .12
= .58
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