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# ANOVA and Post Hoc Analysis

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There are three hospitals. The following data show the number of outpatient surgeries performed at each hospital over the last 10 weeks. At the .05 significance level, can we conclude there is a difference in the mean number of surgeries performed by hospitals? Which hospitals are different from one another?
Good Joe St. Mary's South East
14 18 24
20 24 15
16 22 14
18 20 22
20 28 24
17 25 20
14 26 19
15 24 21
17 25 20
16 26 20

https://brainmass.com/statistics/analysis-of-variance/anova-and-post-hoc-analysis-90212

#### Solution Preview

See attached for table

The null hypothesis tested here is

H0: There is no significant difference in the number of surgeries performed by the three hospitals

Rejection Criteria: Reject the null hypothesis if calculated value of F is ...

#### Solution Summary

The solution gives the details of one way ANOVA for difference in the mean number of surgeries performed by hospitals and post hoc analysis using LSD.

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