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Posted by on Saturday, November 30, 2013 at 9:55pm.

Of the parts produced by a particular machine, 1.5% are defective. If a random sample of 11 parts produced by this machine contains 2 or more defective parts, the machine is shut down for repairs. Find the probability that the machine will be shut down for repairs based on this sampling plan.

  • Statistics - , Saturday, November 30, 2013 at 11:18pm

    1-p(x = 0) + p(x = 1)

    1-[(11C0)(.015)^0(.985)^11 + 11C1 *0.015^1 *.985^10)]

    1-[.84684 + .14185]
    1-.9887 = 0.0113

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