document.write( "Question 1169226: The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $2000 and the standard deviation is $55.\r
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document.write( "a. What is the approximate percentage of buyers who paid less than $1835?
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document.write( "b. What is the approximate percentage of buyers who paid less than $1890?
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document.write( "c. What is the approximate percentage of buyers who paid between $1945 and $2055?
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document.write( "d. What is the approximate percentage of buyers who paid between $2000 and $2055?
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document.write( "e. What is the approximate percentage of buyers who paid between $1890 and $2000?
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document.write( "d. What is the approximate percentage of buyers who paid between $2000 and $2165? \n" );
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Algebra.Com's Answer #793884 by Boreal(15235) You can put this solution on YOUR website! z=(x-mean)/sd \n" ); document.write( "a is -3 sd s from the mean -165/55 \n" ); document.write( "That is about 0.0015 or 0.15% \n" ); document.write( "- \n" ); document.write( "b is -2 sd s from the mean, and that is 2.28%; use 2.5% for approximate \n" ); document.write( "- \n" ); document.write( "c. this is between -1 and +1 sd s and is about 68%. \n" ); document.write( "- \n" ); document.write( "d is between 0 and 1 sd and is half that or 34% \n" ); document.write( "- \n" ); document.write( "e is between -2 sd s and 0 sd s or about 47.5% \n" ); document.write( "- \n" ); document.write( "f. this is between 0 and +3 sd s and is about 49.85% \n" ); document.write( " |