document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1116669>Question 1116669</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The population means and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual.<BR>\n" );
document.write( "For a sample of n equals 70, find the probability of a sample mean being less than 19.5 if u equals20 and o equals1.19. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #731575 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=731575\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The population means and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual.<BR>\n" );
document.write( "For a sample of n equals 70, find the probability of a sample mean being less than 19.5 if u equals 20 and o equals 1.19. <BR>\n" );
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document.write( "z(19.5) = (19.5-20)/(1.19/sqrt(70)) = -3.5154<BR>\n" );
document.write( "P(x-bar < 19.5) = P(z < -3.5154) = normalcdf(-100,-3.5154) = 0.0002196<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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