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State the degrees of freedom error in each of the following tests. (a) A consultant measures...

State the degrees of freedom error in each of the following tests.

(a) A consultant measures job satisfaction in a sample of 15 supervisors, 15 managers, and 15 executives at a local firm.

(b) A researcher tests how nervous public speakers get in front of a small, medium, or large audience. Nine participants are randomly assigned to each group.


(c) A high school counselor has 10 students in each of five classes rate how much they like their teacher.

Math   Statistics-And-Probability   
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