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Brains and count the number of lesions in the hippocampus

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Reference no: EM132121918

ANOVA Lab

You are interested in studying the neurological effects of dehydrogenated brominate oil, a food additive.  You randomly select 25 Sprague-Dawley rats and add a dosage to their drinking water. Because the additive is odorless and colorless, the rats readily consume it.  After six months you sacrifice the rats, microsection their brains and count the number of lesions in the hippocampus.

15mg

7

7

15

11

9

20mg

12

17

12

18

18

25mg

14

18

18

19

19

30mg

19

25

22

19

15

35mg

7

10

11

15

11

A. What are the null and alternative hypotheses?

B. Perform the analysis manually or using Excel or r.  

C. Show the ANOVA summary table

D. Perform a post-hoc comparison, either manually or using r.

E. What do you conclude?

Reference no: EM132121918

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