Question

A lot contains 15 castings from a local supplier and 25 castings from a supplier in the next state. Two castings are selected randomly, without replacement, from the lot of 40.
Let A be the event that the first casting selected is from the local supplier, and let B denote the event that the second casting is selected from the local supplier. Determine:
(a) P (A)
(b) P (B|A)
(c) P (A ∩ B)
(D) P (A U B)


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  • CreatedNovember 12, 2009
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