document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=227767>Question 227767</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A sample of 111 Vopstra customers have had their annual phone charge recorded for the previous calendar year. The data were used to calculate a 93% confidence interval for the mean annual phone charge of all Vopstra customers. The confidence interval was calculated as $445 ± $75. According to this confidence interval, it is most reasonable to conclude that:\r<BR>\n" );
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document.write( "1.)you are 93% confident the mean phone charge of all mobile phone customers is approximately $445\r<BR>\n" );
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document.write( "2.)you are 93% confident the interval between $370 and $520 contains the mean phone charge of all Vopstra customers\r<BR>\n" );
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document.write( "3.)you are 93% confident the mean phone charge of all Vopstra customers is approximately $445\r<BR>\n" );
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document.write( "4.)you are 93% confident the interval between $370 and $520 contains the mean phone charge of all mobile phone customers \r<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 #169246 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=169246\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Ans: #2<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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