SOLUTION: Find the probability that at least 8 had CD players for a sample of 14 teenagers if 60% of them had compact disk players by the age of 16.

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Question 355027: Find the probability that at least 8 had CD players for a sample of 14 teenagers if 60% of them had compact disk players by the age of 16.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P(had)=0.6
P(didn't)=0.4
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At least 8 means 8,9,10,11,12,13,and 14.
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P%288%29=3003%2A%280.4%29%5E%2814-8%29%2A%280.6%29%5E8=0.20660
P%289%29=2002%2A%280.4%29%5E%2814-9%29%2A%280.6%29%5E9=0.20660
P%2810%29=1001%2A%280.4%29%5E%2814-10%29%2A%280.6%29%5E10=0.15495
P%2811%29=364%2A%280.4%29%5E%2814-11%29%2A%280.6%29%5E11=0.08542
P%2812%29=91%2A%280.4%29%5E%2814-12%29%2A%280.6%29%5E12=0.03169
P%2813%29=14%2A%280.4%29%5E%2814-13%29%2A%280.6%29%5E13=0.0731
P%2814%29=1%2A%280.4%29%5E%2814-14%29%2A%280.6%29%5E14=0.00078
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P=P%288%29%2BP%289%29%2BP%2810%29%2BP%2811%29%2BP%2812%29%2BP%2813%29%2BP%2814%29
highlight%28P=0.69245%29