document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=802786>Question 802786</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Need to know how to solve the following:\r<BR>\n" );
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document.write( "The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months.\r<BR>\n" );
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document.write( "What is the probability that a randomly selected watch will be in working condition for more than five years? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #483994 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=483994\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months. <BR>\n" );
document.write( "What is the probability that a randomly selected watch will be in working condition for more than five years?<BR>\n" );
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document.write( "z(5) = (5-4)/8 = 1/8<BR>\n" );
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document.write( "P(x > 5) = P(z> 1/8) = normalcdf(1/8,100) = 0.4503<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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