document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=139240>Question 139240</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The number of admissions for Carolinas Medical Center hospital emergency room over the course of a lunar cycle was 129 patients per 36 days per full moon as compared to 1,315 patients per 330 days per nonfull moon days\r<BR>\n" );
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document.write( "Perform a chi-square test on the data.  Use the test to prove (or disprove) that hospital emergency room admissions are dependent (or independent) on (of) the full moon lunar phase.<BR>\n" );
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document.write( "Full moons were defined as three-day periods in the 29.531-day lunar cycle, with the middle day being described in the world almanac as the full moon.<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 #101535 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=101535\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The number of admissions for Carolinas Medical Center hospital emergency room over the course of a lunar cycle was 129 patients per 36 days per full moon as compared to 1,315 patients per 330 days per nonfull moon days<BR>\n" );
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document.write( "Perform a chi-square test on the data.  Use the test to prove (or disprove) that hospital emergency room admissions are dependent (or independent) on (of) the full moon lunar phase.<BR>\n" );
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document.write( "Full moons were defined as three-day periods in the 29.531-day lunar cycle, with the middle day being described in the world almanac as the full moon.<BR>\n" );
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document.write( "Ho: The # of patients is independent of moon phase<BR>\n" );
document.write( "Ha: The factors are dependent<BR>\n" );
document.write( "DATA:<BR>\n" );
document.write( "full moon  observed number   = 129...............36<BR>\n" );
document.write( "non-full moon observed #     = 1315.............330<BR>\n" );
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document.write( "I ran a Chi-Sq Test with the row and column Data and got:<BR>\n" );
document.write( "Test Statistic: Chi-Sq = 0.287..<BR>\n" );
document.write( "p-value = 0.5920<BR>\n" );
document.write( "df = (2-1)(2-1) = 1<BR>\n" );
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document.write( "Conclusion:Since p-value is greater than 5%, Fail to reject Ho.<BR>\n" );
document.write( "The number of patients and the moon phase are independent.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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