document.write( "Question 376225: Describe the weight of the top 10% of the babies born with each gestation period.
\n" ); document.write( "a. 37 to 39 weeks - mean birth weight=7.31lb, standard deviation=1.09lb
\n" ); document.write( "b. 42 weeks and over - mean birth weight=7.61lb, standard deviation=1.11lb.
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Algebra.Com's Answer #267649 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "Hi
\n" ); document.write( "*Note: \"z+=+blue%28x+-+mu%29%2Fblue%28sigma%29\"
\n" ); document.write( "P = .90 then z = NORMSINV(0.9) = 1.28\r
\n" ); document.write( "\n" ); document.write( "1.28 = ( x - 7.31) / 1.09
\n" ); document.write( "1.28*1.09 = x - 7.31
\n" ); document.write( "1.40 + 7.31 = x
\n" ); document.write( "8.71 lbs = x
\n" ); document.write( "the weight of the top 10% of the babies born > 8.71 lbs\r
\n" ); document.write( "\n" ); document.write( "1.28 = ( x - 7.61) / 1.11
\n" ); document.write( "1.28*1.11 = ( x - 7.61)
\n" ); document.write( "1.42 + 7.61 = 9.03 lbs = x
\n" ); document.write( "the weight of the top 10% of the babies born > 9.03 lbs
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