document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1197853>Question 1197853</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A random sample of 14 size AA batteries for toys yield a mean of 2.95 hours with standard deviation, 0.72 hours.<BR>\n" );
document.write( "(a) Find the critical value, t*, for a 99% CI. t* = \r<BR>\n" );
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document.write( "(b) Find the margin of error for a 99% CI.  <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #831291 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=831291\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> n = 14  x̄ = 2.95 ,  s = .72<BR>\n" );
document.write( " 99% CI:  small sample, df 13,  t = 3.012276  <BR>\n" );
document.write( "Using Excel function: =TINV(.01,13)			\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ME+=+t%2Asigma%2Fsqrt%28n%29 ALIGN=MIDDLE  ALT=\"ME+=+t%2Asigma%2Fsqrt%28n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "plug and Play\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ME+=3.012276%2A.72%2Fsqrt%2814%29 ALIGN=MIDDLE  ALT=\"ME+=3.012276%2A.72%2Fsqrt%2814%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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