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What are the boundaries of the confidence interval? The director of admissions at the University of Maryland, University College is concerned about the high cost

What are the boundaries of the confidence interval?
The director of admissions at the University of Maryland, University College is concerned about the high cost of textbooks for the students each semester. A sample of 25 students enrolled in the university indicates that x(bar) = $315.40 and s = $43.20. Using a significance level of .1, what are the boundaries of the confidence interval? 302.438 - 326.184 300.618 - 330.182 297.485 - 327.820 O 282.871 - 338.475

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