document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=74940>Question 74940</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mr. jones is opposed to national health isurance. He argues that it would be too costly to implement, particularly since the existence of such systems would, among other effects, tend to encourage people to spend more times in hospitals. Mr >jones believes that, length of stays in hospitals is dependent on the types of health isurance that people have. He asked the head of R & D department to check this out – who duly collected data on a random sample of 600 hospitals stays. the data is summarized below :\r<BR>\n" );
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document.write( " 	 	 	 	Days is hospitals 	 	 	 <BR>\n" );
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document.write( " 	 	 	      <5 days 	  5-10 days	>10 days 	 <BR>\n" );
document.write( "Fraction of costs	<25%	40	    75	             65	 <BR>\n" );
document.write( "covered by insurance 	 25-50%	30	    45	             75	 <BR>\n" );
document.write( " 	 	 	>50 %	40	   100	           190	 \r<BR>\n" );
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document.write( "Prepare a statistical analysis to determine whether Mr. Jones’s concern is supported by empirical evidence. You may use 5 % level of significance  <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 #54321 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=54321\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -----------<BR>\n" );
document.write( "Mr >jones believes that, length of stays in hospitals is dependent on the types of health isurance that people have. He asked the head of R & D department to check this out – who duly collected data on a random sample of 600 hospitals stays. the data is summarized below : <BR>\n" );
document.write( "Days is hospitals \r<BR>\n" );
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document.write( "<5 days 5-10 days >10 days <BR>\n" );
document.write( "Fraction of costs <25% 40 75 65 <BR>\n" );
document.write( "covered by insurance 25-50% 30 45 75 <BR>\n" );
document.write( ">50 % 40 100 190 <BR>\n" );
document.write( "Prepare a statistical analysis to determine whether Mr. Jones’s concern is supported by empirical evidence. You may use 5 % level of significance <BR>\n" );
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document.write( "Ho: rows are independent<BR>\n" );
document.write( "Ha: rows are not independent<BR>\n" );
document.write( "Ran a Chi-Square test on the 3x3 set of data using a TI calculator.<BR>\n" );
document.write( "Chi-Square = 24.32<BR>\n" );
document.write( "p value = 0.000069041<BR>\n" );
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document.write( "Conclusion:<BR>\n" );
document.write( "Since p value is less than alpha Reject Ho.<BR>\n" );
document.write( "Length of stay in the hospital seems dependent<BR>\n" );
document.write( "on % of insurance.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. \r<BR>\n" );
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