document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=367896>Question 367896</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The following data gives the heights (in feet) of eruptions of Old Faithful in Yellowstone National Park.\r<BR>\n" );
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document.write( "	140	154	140	140	160	140	150	150	160	155	125<BR>\n" );
document.write( "	136	140	155	130	125	125	139	125	140	140	135<BR>\n" );
document.write( "	141	140	139	110	140	135	140	135	140	139	100<BR>\n" );
document.write( "	105	130	135	131	135	153	155	140	150	153	120\r<BR>\n" );
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document.write( "	Use the data from this sample to construct a 95% confidence interval for the proportion of Old Faithful eruptions that exceed 140 feet in height.\r<BR>\n" );
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document.write( "n=<BR>\n" );
document.write( "p= 		 		 <BR>\n" );
document.write( "q=<BR>\n" );
document.write( "Za/2=<BR>\n" );
document.write( "E= <BR>\n" );
document.write( "		 	Interval:<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 #262269 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=262269\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  The following data gives the heights (in feet) of eruptions of Old Faithful in Yellowstone National Park. <BR>\n" );
document.write( "140 154 140 140 160 140 150 150 160 155 125<BR>\n" );
document.write( "136 140 155 130 125 125 139 125 140 140 135<BR>\n" );
document.write( "141 140 139 110 140 135 140 135 140 139 100<BR>\n" );
document.write( "105 130 135 131 135 153 155 140 150 153 120 <BR>\n" );
document.write( "Use the data from this sample to construct a 95% confidence interval for the proportion of Old Faithful eruptions that exceed 140 feet in height. \r<BR>\n" );
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document.write( "n= 44<BR>\n" );
document.write( "p=11/44 = 1/4 <BR>\n" );
document.write( "q= 3/4<BR>\n" );
document.write( "Za/2= 1.96<BR>\n" );
document.write( "E= 1.96*sqrt((1/4)*(3/4)/44) 0.1279 <BR>\n" );
document.write( "Interval:<BR>\n" );
document.write( "0.25-0.1279 < p < 0.25+0.1279<BR>\n" );
document.write( "===================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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