document.write( "Question 1036292: A set of 250 values has a normal distribution with a mean of 50 and standard deviation of 5. Round answers to the tenths place.\r
\n" ); document.write( "\n" ); document.write( "What percent of the data is between 40 and 60?\r
\n" ); document.write( "\n" ); document.write( "Find the probability that a value selected at random from this data is between 47.5 and 52.5.
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Algebra.Com's Answer #650962 by Boreal(15235)\"\" \"About 
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The first part is the probability something is between -2z and 2z, and that is 95.45%.
\n" ); document.write( "The second part is the probability it is between a z of -0.5 and 0.5, and that is 38.29%.
\n" ); document.write( "z=(value-mean)/sd
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