book are packed in pilled in piles each containing 20 books.35 pile examined for
affective books and the results are give in the following table
  1. NO OF DEFECTIVE    O   1  2    3  4    5    6  ABOVE6
  2. FREQUENCY             400  189  48  11  88  3        2
  3. ONE PILE WAS SELECTED AT RANDOM WHAT IS THE PROBABLITY
  • NO DEFECTED BOOKS?
  • MORE THAN 0 BUT LESS THAN 4 DEFECTIVE BOOKS?
  • MORE THAN 4 DEFECTIVE BOOKS?

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