Question 554979
Find the probability that at least 6 had CD players for a sample of 12 teenagers if 60% of them had compact disk players by the age of 16.
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Binomial with n = 12 and p(had) = 0.6
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P(6<= x <=12) = 1 - P(0<= x <=5) = 1 - binomcdf(12,0.6,5) = 0.8418
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Cheers,
Stan H.