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Suppose that a dean of a private school wants to estimate the mean IQ of her...

Suppose that a dean of a private school wants to estimate the mean IQ of her student body without having to go through the time and expense of administering the tests to all 1,000 students. Instead, she selects 25 students at random and gives them the test. She finds that the mean for her sample is 105.

Calculate the 95% confidence interval.

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Math   Statistics-And-Probability   
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