document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1021892>Question 1021892</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The mean and standard deviation of exam score are 49% and 9% respectively.Assuming that examintion are normally distributed,calculate the probability of score:<BR>\n" );
document.write( "A.less than 50%<BR>\n" );
document.write( "B.more than 45%<BR>\n" );
document.write( "C.between 52% and 63% </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #637601 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=637601\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the z score,<BR>\n" );
document.write( "A.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=%28x-mu%29%2Fsigma=%2850-49%29%2F9=0.1111 ALIGN=MIDDLE  ALT=\"z=%28x-mu%29%2Fsigma=%2850-49%29%2F9=0.1111\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28z%29=0.5442 ALIGN=MIDDLE  ALT=\"P%28z%29=0.5442\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "B.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=-0.4444 ALIGN=MIDDLE  ALT=\"z=-0.4444\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=1-P%28z%29=1-0.3284=0.6716 ALIGN=MIDDLE  ALT=\"P=1-P%28z%29=1-0.3284=0.6716\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "C.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%5B1%5D=%2852-50%29%2F9=0.3333 ALIGN=MIDDLE  ALT=\"z%5B1%5D=%2852-50%29%2F9=0.3333\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%5B2%5D=1.5556 ALIGN=MIDDLE  ALT=\"z%5B2%5D=1.5556\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=P%282%29-P%281%29=0.9401-+0.6306=0.3095 ALIGN=MIDDLE  ALT=\"P=P%282%29-P%281%29=0.9401-+0.6306=0.3095\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );