document.write( "Question 1142268: Please help me with this question.
\n" ); document.write( "The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 40% of adult Australian sheep dogs weigh 65 pounds or more. A sample of 10 adult dogs is studied. What is the probability that more than 7 of them weigh 65 lb or more?\r
\n" ); document.write( "\n" ); document.write( "I understand that n=10 p=.4 and q=.6, however, I do not know what x is. I also do not know which formula to use to get the probability for this problem
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Algebra.Com's Answer #762966 by ikleyn(52832)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "If you take p= 0.4, q= 0.6,  then the solution is as follows.\r\n" );
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document.write( "    Probability(more than 7 of them weight 65 pounds or more) = P(8) + P(9) + P(10).\r\n" );
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document.write( "Further,\r\n" );
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document.write( "    P(8) = \"C%5B10%5D%5E8%2Ap%5E8%2Aq%5E2\" = \"%28%2810%2A9%29%2F%281%2A2%29%29%2A0.4%5E8%2A0.6%5E2\" = 0.010617;\r\n" );
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document.write( "    P(9) = \"C%5B10%5D%5E9%2Ap%5E9%2Aq%5E1\" = \"10%2A0.4%5E9%2A0.6\"       = 0.001573;\r\n" );
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document.write( "    P(10) = \"p%5E10\"           = \"0.4%5E10\"       = 0.00105.\r\n" );
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document.write( "I leave it to you to add these numbers and to get the numerical value of the answer.\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is how such problems are to be solved.\r
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\n" ); document.write( "\n" ); document.write( "In your post, you didn't explain what the \"x\" is, so I do not touch this issue.\r
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