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March 26, 2017

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the j.o supplies company buys calculators from a supplier. The probability of a defective calculator is 10%. If 100 calculators are selected at random, what is the standard deviation of the number of defectives.

  • statistics - ,

    Standard deviation = √npq
    n = 100
    p = .1
    q = 1 - p

    I'll let you take it from here.

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