What are the boundaries of the confidence interval

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Question - 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 ands = $43.20.

Using a significance level of .1, what are the boundaries of the confidence interval?

a) 302.438 - 326.184

b) 300.618 - 330.182

c) 297.485 - 327.820

d) 282.871 - 338.475

Reference no: EM133029812

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