<PRE><B>Question 139240</B>
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
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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.
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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.
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Ho: The # of patients is independent of moon phase
Ha: The factors are dependent
DATA:
full moon  observed number   = 129...............36
non-full moon observed #     = 1315.............330
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I ran a Chi-Sq Test with the row and column Data and got:
Test Statistic: Chi-Sq = 0.287..
p-value = 0.5920
df = (2-1)(2-1) = 1
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Conclusion:Since p-value is greater than 5%, Fail to reject Ho.
The number of patients and the moon phase are independent.
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Cheers,
Stan H.

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