document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=887733>Question 887733</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The number of defective pieces in a sample of 20 bulbs are\r<BR>\n" );
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document.write( "Number of      <BR>\n" );
document.write( "defective                   <BR>\n" );
document.write( "pieces         0   1   2   3   4   5 \r<BR>\n" );
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document.write( "Frequency      8   10   12   3   5   2\r<BR>\n" );
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document.write( " The average number of defective piece per sample is ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #536832 by </B><A HREF=/tutors/aboutme.mpl?userid=skartikey><B>skartikey(21)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=skartikey><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/cgi-bin/show-face.mpl?user=skartikey><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=536832\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x    f    f*x<BR>\n" );
document.write( "0     8     0<BR>\n" );
document.write( "1    10    10<BR>\n" );
document.write( "2    12    24<BR>\n" );
document.write( "3     3     9<BR>\n" );
document.write( "4     5    20<BR>\n" );
document.write( "5     2    10<BR>\n" );
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document.write( "sum  40    73\r<BR>\n" );
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document.write( "mean=sum(f*x)/sum(f)=73/40=1.825\r<BR>\n" );
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document.write( "therefore, the average number of defective piece per sample is 1.825. </SPAN>\n" );
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