document.write( "Question 356287: 10. The mean weight of 500 male students at a certain college is 151 pounds (lb), and the standard deviation is 15 lb. Assuming that the weights are normally distributed, how many students weigh between 100 lb. and 150 lb. \n" ); document.write( "

Algebra.Com's Answer #254395 by Fombitz(32388) $\"\"$ $\"About$

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Find the z score for 100 lbs.
\n" ); document.write( " $\"z%5B1%5D=%28x-mu%29%2Fsigma=%28100-151%29%2F15\"$
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\n" ); document.write( "Find the z score for 150 lbs.
\n" ); document.write( " $\"z%5B2%5D=%28x-mu%29%2Fsigma=%28150-151%29%2F15\"$
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\n" ); document.write( "Find $\"P%28z%5B1%5D%29\"$ and $\"P%28z%5B2%5D%29\"$ .
\n" ); document.write( "Then,
\n" ); document.write( " $\"P%28100%3Cx%3C150%29=P%28z%5B1%5D%3Cz%3Cz%5B2%5D%29=P%28z%5B2%5D%29-P%28z%5B1%5D%29\"$
\n" ); document.write( " $\"highlight%28N=500%2AP%28100%3Cx%3C150%29%29\"$ \n" ); document.write( "

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