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morpeh
[17]
3 years ago
12
Sample of 3 items is selected at random from a box containing 20 items of which 4 aredefective. find the expected number of defe
ctive items in the sample.
Mathematics
Answer
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1
answer:
azamat
3 years ago
6
0
That's 54 I think. 20x3=60-4=54
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