document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=324244>Question 324244</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a company is manufacturing bolts for a picnic table.  the bolt must meet the specificatin of being within 2 millimeters of the standard deviation of 6 millimeters.  determine the minimum required sample size to be tested if you wan to be 95% confident.<BR>\n" );
document.write( "using formula n=(zc0/E)2\r<BR>\n" );
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document.write( "help please </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #232062 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=232062\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the bolt must meet the specificatin of being within 2 millimeters of the standard deviation of 6 millimeters. determine the minimum required sample size to be tested if you want to be 95% confident.<BR>\n" );
document.write( "using formula n=(z*c0/E)^2<BR>\n" );
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document.write( "z for 95% = 1.96<BR>\n" );
document.write( "Co is the standard deviation = 6 mm<BR>\n" );
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document.write( "E is the error allowed = 2 mm<BR>\n" );
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document.write( "So, n = [1.96*6/2]^2 = [1.96*3]^2 = 34 when rounded up<BR>\n" );
document.write( "=================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
document.write( " </SPAN>\n" );
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