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If a bottle is to be selected at random from a certain

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If a bottle is to be selected at random from a certain [#permalink] New post 10 Feb 2006, 14:15
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If a bottle is to be selected at random from a certain collection of bottles, what is the probability that the bottle will be defective?
(1) The ratio of the number of bottles in the collection that are defective to the number that are not defective is 3:500.
(2) The collection contains 3,521 bottles
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 [#permalink] New post 10 Feb 2006, 15:08
A.

Stat 1 alone is sufficinet, p=3/503.

Stat2 is not sufficient, we do not know the number of defective/non defective.
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 [#permalink] New post 10 Feb 2006, 22:16
The question asks for a ratio, not an actual number.

(A)
  [#permalink] 10 Feb 2006, 22:16
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