document.write( "Question 278499: Women's weights are normally distributed with a mean given by 143 lb and a standard deviation given by 29 lb. Find the first decile, which separates the bottom 10% from the top 90%. \n" ); document.write( "

Algebra.Com's Answer #202664 by stanbon(75887) $\"\"$ $\"About$

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Women's weights are normally distributed with a mean given by 143 lb and a standard deviation given by 29 lb. Find the first decile, which separates the bottom 10% from the top 90%.
\n" ); document.write( "Find the z-value which has a left tail of 10%.
\n" ); document.write( "invNorm(10) = -1.2816
\n" ); document.write( "-----
\n" ); document.write( "Find the x-value associated with that z-value:
\n" ); document.write( "x = zs + u
\n" ); document.write( "z = -1.2816*29 + 143
\n" ); document.write( "z = 105.84
\n" ); document.write( "----------------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "

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