document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=265610>Question 265610</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My friend works on computers his average time is 4 hours with a 1 hour standard deviation\r<BR>\n" );
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document.write( "    1  What is the chance that he works on a computer from his average to 5 hours<BR>\n" );
document.write( "    2  What is the chance that he works on a computer from 3 hours to his average <BR>\n" );
document.write( "    3  What is the chance that he works on a computer from 3 hours to 5 hours<BR>\n" );
document.write( "    4  What is the chance that he works on a compute more than 5 hours\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #195302 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=195302\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> My friend works on computers his average time is 4 hours with a 1 hour standard deviation <BR>\n" );
document.write( "1 What is the chance that he works on a computer from his average to 5 hours<BR>\n" );
document.write( "Ans: 5 is 1 standard deviation to the right of the mean.<BR>\n" );
document.write( "P(4 < x < 5) = 0.34<BR>\n" );
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document.write( "2 What is the chance that he works on a computer from 3 hours to his average<BR>\n" );
document.write( "Ans: 3 is 1 standard deviation to the left of the mean.<BR>\n" );
document.write( "P(3 < x < 4) = 0.34<BR>\n" );
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document.write( "3 What is the chance that he works on a computer from 3 hours to 5 hours<BR>\n" );
document.write( "Ans: 0.34 + 0.34 = 0.68<BR>\n" );
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document.write( "4 What is the chance that he works on a computer more than 5 hours <BR>\n" );
document.write( "Ans: 5 hrs is 2 standard deviations above the mean.<BR>\n" );
document.write( "P(x> 5) = 0.5000 - P(4 < x < 5)<BR>\n" );
document.write( "= 0.5000 - -.34<BR>\n" );
document.write( "= 0.16<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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