document.write( "Question 1140872: the ph of a chemical process is normally distributed with mean of 6.0 and standard deviation of 0.9. what is the z-score of ph 8.7? \n" ); document.write( "
Algebra.Com's Answer #761396 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
z=(x-mean)/sd=(8.7-6)/0.9 or +3 \n" ); document.write( "
\n" );