A psychologist at a private mental hospital

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Reference no: EM13889914

1. A psychologist at a private mental hospital was asked to determine whether there was any clear difference in the length of stay of patients with different categories of diagnosis. Looking at the last four patients in each of three major categories, the results (in terms of weeks of stay) were as follows:

Diagnosis Category

Affective Disorders Cognitive Disorders Drug-related Conditions

7 12 8

6 8 10

5 9 12

6 11 10

State the null and alternative hypothesis
Using a = 0.05, conduct the ANOVA.
What do you conclude?
Write out your source table

Reference no: EM13889914

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