Construct a confidence interval
Scores on the sat mathematics test are believed to be normally distributed with mean µ. The scores of a random sample of three students who recent took the exam are 550, 620, and 480. Construct a 95% confidence interval for µ.
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Specifically, the marketing students were interested if exceeding the speed limit was related to social activity. They collected the following responses from 100 randomly selected students: The null hypothesis for the analysis is:
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