krisknox3485 krisknox3485
  • 12-10-2022
  • Mathematics
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suppose that the probabilities of a customer purchasing​ 0, 1, or 2 books at a book store are 0.3 ​, 0.3 ​, and 0.4 ​, respectively. what is the standard deviation of this​ customer's book​ purchases?

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