document.write( "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. \n" ); document.write( "

Algebra.Com's Answer #253708 by Fombitz(32388) $\"\"$ $\"About$

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P(had)= $\"0.6\"$
\n" ); document.write( "P(didn't)= $\"0.4\"$
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\n" ); document.write( "At least 8 means 8,9,10,11,12,13,and 14.
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\n" ); document.write( " $\"P%288%29=3003%2A%280.4%29%5E%2814-8%29%2A%280.6%29%5E8=0.20660\"$
\n" ); document.write( " $\"P%289%29=2002%2A%280.4%29%5E%2814-9%29%2A%280.6%29%5E9=0.20660\"$
\n" ); document.write( " $\"P%2810%29=1001%2A%280.4%29%5E%2814-10%29%2A%280.6%29%5E10=0.15495\"$
\n" ); document.write( " $\"P%2811%29=364%2A%280.4%29%5E%2814-11%29%2A%280.6%29%5E11=0.08542\"$
\n" ); document.write( " $\"P%2812%29=91%2A%280.4%29%5E%2814-12%29%2A%280.6%29%5E12=0.03169\"$
\n" ); document.write( " $\"P%2813%29=14%2A%280.4%29%5E%2814-13%29%2A%280.6%29%5E13=0.0731\"$
\n" ); document.write( " $\"P%2814%29=1%2A%280.4%29%5E%2814-14%29%2A%280.6%29%5E14=0.00078\"$
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\n" ); document.write( " $\"P=P%288%29%2BP%289%29%2BP%2810%29%2BP%2811%29%2BP%2812%29%2BP%2813%29%2BP%2814%29\"$ \r
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