document.write( "Question 1152607: Suppose the string of Christmas lights you just bought has twenty-four bulbs
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Algebra.Com's Answer #774650 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
Let's first calculate the probability that the string of lights WILL work.\r\n" );
document.write( "Then we'll subtract that from 1 to find the probability that it will FAIL\r\n" );
document.write( "to work.\r\n" );
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document.write( "For the string of lights to WORK, that means:\r\n" );
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document.write( "the 1st bulb works AND the 2nd bulb works AND the 3rd bulb works AND ∙∙∙ the\r\n" );
document.write( "24th bulb works.\r\n" );
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document.write( "So that's (0.97)(0.97)∙∙∙(0.97) to 24 factors or (0.97)24 = 0.4814172219 \r\n" );
document.write( "or a string will work about 48% of the time.  So the other 52% of the time a\r\n" );
document.write( "string will fail. \r\n" );
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document.write( "We calculate 1 - 0.4814172219 and get 0.5185827781 or a probability of\r\n" );
document.write( "51.85827781% of the time that a string will fail, and then round that off\r\n" );
document.write( "to as many decimal places as your teacher says to round it.\r\n" );
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document.write( "Edwin
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