document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1119438>Question 1119438</A>: <I><SPAN STYLE=\"word-break: break-all;\"> he mean of a normal probability distribution is 540; the standard deviation is 95.(Round the final answers to 2 decimal places.)\r<BR>\n" );
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document.write( "a. 	\r<BR>\n" );
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document.write( "About what percentage of the observations lie between 445 and 635?\r<BR>\n" );
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document.write( "  Percentage of observations 	%  \r<BR>\n" );
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document.write( "b. 	About what percentage of the observations lie between 350 and 730?\r<BR>\n" );
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document.write( "  Percentage of observations 	%  \r<BR>\n" );
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document.write( "c. 	About what percentage of the observations lie between 255 and 825?\r<BR>\n" );
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document.write( "  Percentage of observations 	%   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #734999 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=734999\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The mean of a normal probability distribution is 540; the standard deviation is 95.(Round the final answers to 2 decimal places.) \r<BR>\n" );
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document.write( "a. <BR>\n" );
document.write( "About what percentage of the observations lie between 445 and 635?<BR>\n" );
document.write( "z(445) = (445-540)/95 = -1<BR>\n" );
document.write( "z(635) = (635-540)/95 = +1<BR>\n" );
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document.write( "P(445<= x <=635) = P(-1<= z <=1) = 0.6827 = 68.25%<BR>\n" );
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document.write( "b. About what percentage of the observations lie between 350 and 730?<BR>\n" );
document.write( "Use the same procedure.<BR>\n" );
document.write( "Ans:: 95.45%<BR>\n" );
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document.write( "c. About what percentage of the observations lie between 255 and 825? <BR>\n" );
document.write( "Use the same procedure.<BR>\n" );
document.write( "Ans:: 99.73%<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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