Monthly rent paid by undergraduates and graduate students. Undergraduate Student Rents (n = 10) 870 710 730 810 770 830 820 660 980 700 Graduate Student Rents (n = 12) 1,150 740 910 920 860 780 910 820 940 920 830 880 Click here for the Excel Data File (a) Construct a 90 percent confidence interval for the difference of mean monthly rent paid by undergraduates and graduate students, using the assumption of unequal variances with Welch's formula for d.f. (Do not round the intermediate calculations. Round your final answers to 3 decimal places. Negative values should be indicated by a minus sign.) The 90% confidence interval is from ]to (b) What do you conclude? O We can conclude there is a significant difference in means for undergraduate and graduate rent. O We cannot conclude there is a significant difference in means for undergraduate and graduate rent.

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