Scores on the math SAT are normally distributed. A sample of 20 SAT scores had standard deviation
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Scores on the math SAT are normally distributed.
A sample of 20 SAT scores had standard deviation s = 87.
Someone says that the scoring system for the SAT is designed so that the population standard deviation will be σ = 100.
Do these data provide sufficient evidence to contradict this claim?
Use the α = 0.05 level of significance.
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