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Scores on the math SAT are normally distributed. A sample of 26 SAT scores had standard...

Scores on the math SAT are normally distributed. A sample of 26 SAT scores had standard deviation s = 90. Someone says that the scoring system for the SAT is designed so that the population standard deviation will be less than 100. Do these data provide sufficient evidence to contradict this claim? Use critical value method and 0.05 significance level.

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