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(c) A professor wants to evaluate the effectiveness of his teaching assistants. In one specific class period observed, the 45 students were randomly divided into

(c) A professor wants to evaluate the effectiveness of his teaching assistants. In one specific class period observed, the45students were randomly divided into three equal-sized groups, and each group was taught power calculations from one of the assistants. At the beginning of the next class, each student took a quiz on power calculations, and these scores were compared.

DFG=

DFE=

DFT=

H0:

Ha:

numerator df=

denominator df=

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