document.write( "Question 455421:  A list of numbers have mean 7 and standard deviation 2.5. If x is a number in the list that is 2 standard deviation above mean then what is the value of x ?
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document.write( "please explain the procedure
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document.write( "thank you \n" );
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| Algebra.Com's Answer #312672 by stanbon(75887)      You can put this solution on YOUR website! A list of numbers have mean 7 and standard deviation 2.5. If x is a number in the list that is 2 standard deviation above mean then what is the value of x ? \n" ); document.write( "please explain the procedure \n" ); document.write( "--------------- \n" ); document.write( "Since z = (x-u)/s, x = zs+u \n" ); document.write( "--- \n" ); document.write( "You have \n" ); document.write( "u = 7 \n" ); document.write( "s = 2.5 \n" ); document.write( "z = 2 \n" ); document.write( "--- \n" ); document.write( "So, x = 2*2.5+7 \n" ); document.write( "x = 12 \n" ); document.write( "=================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |