document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=723818>Question 723818</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A hundred squash balls are tested by dropping from a height of 100 inches and measuring the height of the bounce. A ball is fast if it rises above 32 inches. The average height of bounce was 30 inches and the standard deviation was 3/4 inches. What was the chance of getting a fast standard ball ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #443434 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=443434\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A hundred squash balls are tested by dropping from a height of 100 inches and measuring the height of the bounce. A ball is fast if it rises above 32 inches. The average height of bounce was 30 inches and the standard deviation was 3/4 inches. What was the chance of getting a fast standard ball ?<BR>\n" );
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document.write( "z(32) = (32-30)/(3/4) = 2/(3/4) = 8/3<BR>\n" );
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document.write( "P(x > 32) = P(z > 8/3) = normalcdf(8/3,100) = 0.0038<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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