document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=888693>Question 888693</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello \r<BR>\n" );
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document.write( "Could someone give me a hand with the following:\r<BR>\n" );
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document.write( "What is the probability that a normal random variable has an outcome within 1 standard deviation of the mean?\r<BR>\n" );
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document.write( "thanks<BR>\n" );
document.write( "Paul </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #537583 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=537583\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the probability will be approximately 68%.<BR>\n" );
document.write( ".6826894809 to be more exact, taken from my TI-84 Plus Calculator.\r<BR>\n" );
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document.write( "if you want to calculate it from the z-score table, you would do the following:\r<BR>\n" );
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document.write( "get a z-score table like the following one.\r<BR>\n" );
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document.write( "<a  rel=nofollow HREF= \"http://lilt.ilstu.edu/dasacke/eco148/ztable.htm\" target = \"_blank\">http://lilt.ilstu.edu/dasacke/eco148/ztable.htm</a>\r<BR>\n" );
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document.write( "look up the area to the left of a z score of 1<BR>\n" );
document.write( "look up the area to the left of a z score of -1<BR>\n" );
document.write( "subtract the smaller area from the larger area.<BR>\n" );
document.write( "the result is your answer.\r<BR>\n" );
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document.write( "in this table...\r<BR>\n" );
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document.write( "z score of 1 gives an area to the left of it of .8413<BR>\n" );
document.write( "z score of -1 gives an area to the left of it of .1587\r<BR>\n" );
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document.write( ".8413 - .1587 = .6826\r<BR>\n" );
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document.write( "that's the area under the normal distribution curve that's between a z score of -1 and a z score of 1.\r<BR>\n" );
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document.write( "there's an online z score calculator that will show you this in pictures.\r<BR>\n" );
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document.write( "that calculator can be found at the following link:\r<BR>\n" );
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document.write( "<a  rel=nofollow HREF= \"http://davidmlane.com/hyperstat/z_table.html\" target = \"_blank\">http://davidmlane.com/hyperstat/z_table.html</a>\r<BR>\n" );
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document.write( "the picture of the area of a z score between -1 and 1 is shown below:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" src = \"http://theo.x10hosting.com/2014/072201.jpg\" alt=\"$$$\" </>\r<BR>\n" );
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document.write( " </SPAN>\n" );
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