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Posted by on Saturday, July 27, 2013 at 4:40pm.

A random sample was taken from Wyoming. Eighty percent of students reported that they like dogs, 64% reported they like cats, and 97% reported that they like dogs or cats. What percentage of students like both dogs and cats?

  • Math - , Saturday, July 27, 2013 at 6:08pm

    P(D or C) = P(D)+P(C)-P(D and C)
    .97 = .80 + .64 - P(D and C)
    P(D and C) = .47

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