document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177713>Question 177713</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 8.46  A random sample of 10 miniature Tootsie Rolls was taken from a bag.  Each piece was weighed on a very accurate scale.  The results in grams were:\r<BR>\n" );
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document.write( "3.087 3.131 3.241 3.241 3.270 3.353 3.400 3.411 3.437 3.477\r<BR>\n" );
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document.write( "(a)Construct a 90 percent confidence interval for the true mean weight.\r<BR>\n" );
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document.write( "(b) What sample size would be necessary to estimate the true weight with an error (+ or -) 0.03 grams with 90 percent confidence?  \r<BR>\n" );
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document.write( "(c) Discuss the factors which might cause variation in the weight of Tootsie Rolls during manufacture.   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #133091 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=133091\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> done today<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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