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To build an interval estimate for mean annual textbook expense of all IUPUI undergraduate students, a random sample of n = 108 students was selected.From

To build an interval estimate for mean annual textbook expense of all IUPUI undergraduate students, a random sample ofn = 108students was selected.From the sample data the following quantities were calculated.The sample data are in dollars.

x = 66620(x x) = 4484130

We are 95% confident that the population mean is between:

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593.21 and 640.49

591.64 and 642.07

584.54 and 649.16

578.24 and 655.46

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