document.write( "Question 674267: what is the probability that a value picked at random from the standard normal distribution will be between -1 and 1 is approximately______ \n" ); document.write( "
Algebra.Com's Answer #419135 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
 
\n" );
document.write( "Hi
\n" );
document.write( "For the normal distribution: 
\n" );
document.write( "one  standard deviation from the mean accounts for about 68.2% of the set **** 
\n" );
document.write( "two standard deviations from the mean account for about 95.4%
\n" );
document.write( "and three standard deviations from the mean account for about 99.7%.
\n" );
document.write( "Important to Understand z -values as they relate to the Standard Normal curve:
\n" );
document.write( "Below:  z = 0, z = ± 1, z= ±2 , z= ±3 are plotted.  
\n" );
document.write( "Note: z = 0 , 50% of the area under the curve is to the left and 50%  to the right
\n" );
document.write( "
\n" );
document.write( " \n" );
document.write( "
\n" );