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Statistics

In a department store there are 120 customers, 90 of whom will buy at least 1 item. If 5 customers are selected at random, one by one, find the probability that all will buy at least 1 item.

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  1. Pr=(90/120)(89/119)(88/118)(87/117)(86/116)

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    bobpursley
  2. the answer the book is 243/1024

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  3. Great, we agree. Put (90/120)(89/119)(88/118)(87/117)(86/116) in your google search window.

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    bobpursley
  4. 90/120)(89/119)(88/118)(87/117)(86/116

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  5. 0.227

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