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Scores on the SAT Mathematics test (SAT-M) are believed to be Normally distribu...
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Scores on the SAT Mathematics test (SAT-M) are believed to be Normally distributed, with mean μ. The scores of a random sample of three students who recently took the exam are 550, 620, and 480. A 95% confidence interval for μ based on these data is
[hint: You need to first find the sample mean and sample standard deviation]
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