document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=928778>Question 928778</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 16.  The amount of time it takes to recover physiologically from a certain kind of sudden noise is found to be normally distributed with a mean of 80 seconds and a standard deviation of 10 seconds. Using the 50%–34%–14% figures, approximately what percentage of scores (on time to recover) will be:\r<BR>\n" );
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document.write( "Above 100?<BR>\n" );
document.write( "Below 100?<BR>\n" );
document.write( "Above 90?<BR>\n" );
document.write( "Below 90?<BR>\n" );
document.write( "Above 80?<BR>\n" );
document.write( "Below 80?<BR>\n" );
document.write( "Above 70?<BR>\n" );
document.write( "Below 70?<BR>\n" );
document.write( "Above 60?<BR>\n" );
document.write( "Below 60?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #563888 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=563888\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For the normal distribution: Below:  z = 0, z = ± 1, z= ±2 , z= ±3 are plotted.  <BR>\n" );
document.write( "Area under the standard normal curve to the left of the particular z is P(z)<BR>\n" );
document.write( "Note: z = 0 (x value: the mean) 50% of the area under the curve is to the left and 50%  to the right<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28400%2C200%2C-5%2C5%2C-.5%2C1.5%2C+graph%28400%2C200%2C-5%2C5%2C-.5%2C1.5%2C+exp%28-x%5E2%2F2%29%29%2C+green%28line%281%2C0%2C1%2Cexp%28-1%5E2%2F2%29%29%2Cline%28-1%2C0%2C-1%2Cexp%28-1%5E2%2F2%29%29%29%2Cgreen%28line%282%2C0%2C2%2Cexp%28-2%5E2%2F2%29%29%2Cline%28-2%2C0%2C-2%2Cexp%28-2%5E2%2F2%29%29%29%2Cgreen%28line%283%2C0%2C3%2Cexp%28-3%5E2%2F2%29%29%2Cline%28-3%2C0%2C-3%2Cexp%28-3%5E2%2F2%29%29%29%2Cgreen%28line%28+0%2C0%2C+0%2Cexp%280%5E2%2F2%29%29%29%2Clocate%284.8%2C-.01%2Cz%29%2Clocate%284.8%2C.2%2Cz%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".........<BR>\n" );
document.write( "mean of 80 seconds and a standard deviation of 10 seconds<BR>\n" );
document.write( "Using the 50%–34%(1sd)–14%(2sd) figures<BR>\n" );
document.write( "Above 100: 50 - 48 = 2%<BR>\n" );
document.write( " Below 100: 98%<BR>\n" );
document.write( " Above 90: 50 -34 = 16%<BR>\n" );
document.write( " Below 90: 84%<BR>\n" );
document.write( " Above 80: 50%<BR>\n" );
document.write( " Below 80: 50%<BR>\n" );
document.write( " Above 70: 34 + 50 = 84%<BR>\n" );
document.write( " Below 70: 16%<BR>\n" );
document.write( " Above 60: 14 + 34 + 50 = 98%<BR>\n" );
document.write( " Below 60: 2%<BR>\n" );
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