Question: Recall the teachers expectation data described in Question 8.2.7. Let j denote the true average IQ change associated with group j, j = I, II,

Recall the teachers’ expectation data described in Question 8.2.7. Let μj denote the true average IQ change associated with group j, j = I, II, or III. Test H0: μI = μII = μIII versus H1: not all μj’s are equal. Let α = 0.05.

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