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Mathematics, 12.03.2020 00:25 batmanmarie2004

The national mean SAT score in math is 550. Suppose a high school principal claims that the mean SAT score in math at his school is better than the national mean score. A random sample of 72 students finds a mean score of 574. Assume that the population standard deviation is LaTeX: \sigma = 100σ = 100. Is the principal's claim valid? Use a level of significance of LaTeX: \alpha = 0.05α = 0.05.

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