document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=581390>Question 581390</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Defective<BR>\n" );
document.write( "Suppose that a company determines if it will accept a shipment of 15 items by sampling 5 of the items for close inspection. Suppose that 4 of the items in the shipment are defective.<BR>\n" );
document.write( "Referring to Defective, find the standard deviation of the number of defective items.<BR>\n" );
document.write( "I think the way to do this problem is npq to get the variance and then find the square root to get the standard deviation. (5)(.8)(.2)=.8 then the square root is .8944 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #371620 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=371620\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose that a company determines if it will accept a shipment of 15 items by sampling 5 of the items for close inspection. Suppose that 4 of the items in the shipment are defective.<BR>\n" );
document.write( "Referring to Defective, find the standard deviation of the number of defective items.<BR>\n" );
document.write( "I think the way to do this problem is npq to get the variance and then find the square root to get the standard deviation. (5)(.8)(.2)=.8 then the square root is .8944<BR>\n" );
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document.write( "Binomial with n = 5 and p(defect) = 4/15 and p(not defect) = 11/15<BR>\n" );
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document.write( "std = sqrt(npq) = sqrt(15*(4/15)(11/15)) = 1.7127\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============ </SPAN>\n" );
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