Mathematics, 18.11.2020 16:50, decorajackson01

A company has developed a training procedure to improve scores on the SAT. Following the training, 100 high school students take the SAT. The average math score is 517, with s = 90. Assuming µ = 500 for the math SAT, test the null hypothesis. Did training significantly improve scores (α = .05, directional)?

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A company has developed a training procedure to improve scores on the SAT. Following the training, 1...