Do ESL students score lower in English college placement tests than the national average? A researcher obtained the English placement test scores of a random sample of 53 ESL students. He finds that the mean score of these 53 students is 147.9. Is this significantly different from the national average (μ = 150, o = 15)? Using a = .05, match the correct answers to each value N Zobserved Zcv Standard error of the mean [Choose ] 4 [Choose ] [Choose ] [Choose ]

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