document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=195259>Question 195259</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The average commute to work(one way) is 25.5 minutes according to the 2000 census. If we assume that commuting times are normally distributed with a standard deviation of 6.1 minutes, what is the probability that a randomly selected commuter spends more than 30 minutes a day commuting one way? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #146623 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=146623\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The average commute to work(one way) is 25.5 minutes according to the 2000 census. \r<BR>\n" );
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document.write( "If we assume that commuting times are normally distributed with a standard deviation of 6.1 minutes, what is the probability that a randomly selected commuter spends more than 30 minutes a day commuting one way\r<BR>\n" );
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document.write( "Find the z-value of 30 minutes.<BR>\n" );
document.write( "z(30) = (30-25.5)/6.1 = 0.7377<BR>\n" );
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document.write( "P(x > 30) = P(z > 0.7377) = 0.2303<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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