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 one year ago
Suppose that we are testing a mine for two different types of minerals, A and B. Of all the wells, 25% had no minerals, 45% had mineral A and 50% had mineral B (so some had to have both minerals A and B). If we choose a well at
random, and the probability distribution for Y , the number of minerals found in the mine.
I'm having trouble with it. I'm new to this stuff. I'll post what i've figured out so far.
 one year ago
Suppose that we are testing a mine for two different types of minerals, A and B. Of all the wells, 25% had no minerals, 45% had mineral A and 50% had mineral B (so some had to have both minerals A and B). If we choose a well at random, and the probability distribution for Y , the number of minerals found in the mine. I'm having trouble with it. I'm new to this stuff. I'll post what i've figured out so far.

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