document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=947489>Question 947489</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose a geyser has a mean time between eruptions of 74 min. If the interval time between eruptions is normally distributed with standard deviation 20 min whatbis probability that a randomly selected time interval is longer than 83min. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #578212 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=578212\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose a geyser has a mean time between eruptions of 74 min. If the interval time between eruptions is normally distributed with standard deviation 20 min whatbis probability that a randomly selected time interval is longer than 83min.<BR>\n" );
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document.write( "z(83) = (83-74)/20 = 9/20<BR>\n" );
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document.write( "P(x > 83) = P(z > 9/20) = normalcdf(9/20,100) = 0.3264<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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