There is a great deal of folklore about the effects of thefull moon on humans an

Question

There is a great deal of folklore about the effects of thefull moon on humans and other animals. Do animals bite humans moreduring a full moon? In an attempt to study this question,Bhattacharjee etal. (2000) collected data on admissions toa medical facility for treatment of bites by animals: cats,rats, horses, and dogs. 95% of the bites were by man's best friend,the dog. The lunar cycle was divided into 10 periods, and thenumber of bites in each period is shown in the following table. Day29 is the full moon. Is there a temporal trend in the incidence ofbites? Lunar Day 16, 17, 18 19, 20, 21 22, 23, 24 25, 26, 27 28, 29, 1 2, 3, 4 5, 6, 7 8, 9, 10 11, 12, 13 14, 15 Number of Bites 137 150 163 201 269 155 142 146 148 110 Lunar Day 16, 17, 18 19, 20, 21 22, 23, 24 25, 26, 27 28, 29, 1 2, 3, 4 5, 6, 7 8, 9, 10 11, 12, 13 14, 15 Number of Bites 137 150 163 201 269 155 142 146 148 110 Lunar Day 16, 17, 18 19, 20, 21 22, 23, 24 25, 26, 27 28, 29, 1 2, 3, 4 5, 6, 7 8, 9, 10 11, 12, 13 14, 15 Number of Bites 137 150 163 201 269 155 142 146 148 110

Explanation / Answer

Yes, of course, you just restated the answer in the book. But, what is the rigorous form of your H0 and H1? Also, what are your expected values and how did you calculate your chi-squared value from those? That's the real question.

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