document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=358602>Question 358602</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose the amount of time it takes a popcorn kernel to pop is normally distributed with a mean of 150 seconds and a standard deviation of 15 seconds.  If a popcorn kernal is randomly selected, what is the probability that it takes between 130 seconds to 170 seconds for the kernal to pop? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #255928 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=255928\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the z-score.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=%28x-mu%29%2Fsigma ALIGN=MIDDLE  ALT=\"z=%28x-mu%29%2Fsigma\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z%5B1%5D=%28130-150%29%2F15 ALIGN=MIDDLE  ALT=\"z%5B1%5D=%28130-150%29%2F15\"   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=%28170-150%29%2F15 ALIGN=MIDDLE  ALT=\"z%5B2%5D=%28170-150%29%2F15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Then find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28z%5B1%5D%29 ALIGN=MIDDLE  ALT=\"P%28z%5B1%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28z%5B2%5D%29 ALIGN=MIDDLE  ALT=\"P%28z%5B2%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28130%3Cx%3C170%29=P%28z%5B2%5D%29-P%28z%5B1%5D%29 ALIGN=MIDDLE  ALT=\"P%28130%3Cx%3C170%29=P%28z%5B2%5D%29-P%28z%5B1%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );