document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=516685>Question 516685</A>: <I><SPAN STYLE=\"word-break: break-all;\"> We are using the standard normal random variable is between 0 and Z table\r<BR>\n" );
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document.write( "I need to find the probability for <BR>\n" );
document.write( "mean of 22 feet height and standard deviation is 4 feet <BR>\n" );
document.write( "A. what is the probability that the height is greater than 17<BR>\n" );
document.write( "B. height is less than 13 feet<BR>\n" );
document.write( "C. the height is between 25 and 31 feet\r<BR>\n" );
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document.write( "I tried x-u/O to get z score and looked up in the table and all my answers have been wrong please help me understand how to find probability\r<BR>\n" );
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document.write( "Thank You<BR>\n" );
document.write( "Beverly  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #344450 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=344450\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> mean of 22 feet height and standard deviation is 4 feet <BR>\n" );
document.write( "A. what is the probability that the height is greater than 17<BR>\n" );
document.write( "z(17) = (17-22)/4 = -5/4<BR>\n" );
document.write( "P(x > 17) = P(z > -5/4) = 0.8944 <BR>\n" );
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document.write( "B. height is less than 13 feet<BR>\n" );
document.write( "z(13) = (13-22)/4 = -9/4<BR>\n" );
document.write( "P(x < 13) = P(z < -9/4) = 0.122 <BR>\n" );
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document.write( "C. the height is between 25 and 31 feet<BR>\n" );
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document.write( "Find the z value of 25 and of 31.<BR>\n" );
document.write( "The find the probability that z is between those two values.<BR>\n" );
document.write( "Ans: 0.2144<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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