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The director of admissions is concerned about the high cost of textbooks for the students each semester. A sample of 25 students enrolled in the

The director of admissions 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 = $75. Using the .05 level of significance, is there evidence that the population mean is above $300?

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