document.write( "Question 1080551: A pair of dice are rolled 20 times. What is the probability that:\r
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Algebra.Com's Answer #694684 by Edwin McCravy(20063) $\"\"$ $\"About$

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document.write( "There are 6 way to get a 7\r\n" );
document.write( "1+6,2+5,3+4,4+3,5+2,6+1\r\n" );
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document.write( "There are 36 ways the dice can come up.\r\n" );
document.write( "P(7) = 1/6\r\n" );
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document.write( "On your TI-83 or 84 with the menu at 2ND VARS\r\n" );
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document.write( "1 - binomcdf(20,1/6,2)\r\n" );
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document.write( "0.6713409285\r\n" );
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document.write( "--------\r\n" );
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document.write( "Expected number = np = 20(1/6) = 20/6 = \r\n" );
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document.write( "[It will never be  times, but if you rolled\r\n" );
document.write( "20 times ecery day for a year, and averaged up the number \r\n" );
document.write( "of 5's each day for the whole year it would be about .\r\n" );
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document.write( "Edwin

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