document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=311421>Question 311421</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A random sample of 10 miniature tootsie rolls was taken from a bag. Each piece was weighed n a very accurate scale. The results in grams were:  3.087,3.131,3.241,3.241,3.270,3.353,3.400,3.411,3.437,3.477<BR>\n" );
document.write( "A)Construct a 90 percent confidence interval for the true mean weight.<BR>\n" );
document.write( "B)What sample size would be necessary to estimate the true weight with an error of +- 0.003 grams with 90 percent confidence?<BR>\n" );
document.write( "C)Discuss the factors which might cause variation in the weight of tootsie rolls during manufacture. (Data are from a project by MBA student Henry Scussel.) Tootsie<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #222765 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=222765\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Answered<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );