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(Solved) Lab #42 2. A drug company is comparing the results of three medications on the severity of amoebic dysentery in Peace Corps volunteers returning from...


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Lab #4­2 2. A drug company is comparing the results of three medications on the severity of
amoebic dysentery in Peace Corps volunteers returning from Haiti.
Placebo:
11.3
9.9
13.4
12.8
11.3
Metronidazole
3.6
4.4
4.2
3.9
2.1
Paromomycin
4.7
3.5
2.9
2.1
4.2
a. State the null and alternative hypotheses.
b. Conduct an ANOVA, showing all your work for each step, and then also report your answers in an ANOVA table like the one below. You need to show both the work for the answers you will present in the table and then also present the completed table itself. Source Sum of Squares df Mean square F­statistic Effect X X X Error X X X Total X X X c. Use a Type I error rate of α = 0.05 and look up your critical value. Also report whether the p­value associated with the F­statistic you calculated is bigger or smaller than alpha (hint: you will need to know your degrees of freedom for both of the values).
d. What do you conclude regarding the null hypothesis?
e. What do you conclude about your research question (use your own words, in everyday language)?
f. Conduct and interpret follow­up t­tests for this ANOVA analysis.

 


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