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July 21st, 2019, 10:37 PM   #1
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How to find the Critical Value?

An experiment to determine the most effective way to teach safety principles applied four different teaching methods.
Some employees were given programmed instruction booklets and worked through the course at their own pace.
Other employees attended lectures.
A third group watched a television presentation, and a fourth group was divided into small discussion groups.
A high of 10 was possible.
A sample of five tests was selected from each group.
The test grade results were:

At the 0.01 level, what is the critical value?
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