document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=828051>Question 828051</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The amount of snowfall falling in a certain mountain range is normally distributed with a mean of 70 inches, and a standard<BR>\n" );
document.write( "deviation of 10 inches. What is the probability that the mean annual snowfall during 64 randomly picked years will exceed 72.8<BR>\n" );
document.write( "inches </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #499061 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=499061\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The amount of snowfall falling in a certain mountain range is normally distributed with a mean of 70 inches, and a standard<BR>\n" );
document.write( "deviation of 10 inches. What is the probability that the mean annual snowfall during 64 randomly picked years will exceed 72.8 inches.\r<BR>\n" );
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document.write( "z(72.8) = (72.8-70)/[10/sqrt(64)] =  = 2.8/(10/8) = 2.24<BR>\n" );
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document.write( "P(x-bar > 72.8) = P(z > 2.24) = 0.0125<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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