A manufacturing company is interested in determining whether a significant difference exists between the variance of the number of units produced per day by one machine operator and the similar variance for another machine operator. The file P10_21.XLS contains the number of units produced by operator 1 and operator 2, respectively, on each of 25 days. Note that these two sets of days are not necessarily the same, so you can assume that the two samples are independent of one another. 

a. Do these sample data indicate a statistically significant difference at a = 0.10? Explain your answer.

b. If your conclusion in part a were incorrect, would you have committed a type I or type II error? Explain.

c. At which values of w could you not reject the null hypothesis?

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File F Paste 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Home Insert Page Layout N P Cut Copy Format Painter Clipboard A13 26 27 28 29 30 31 32 K Ready T A 1 Fulltime Businessweek Ranking 2 1 3 2 4 3 5 4 6 5 7 6 8 7 9 8 10 9 11 10 11 Calibri 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 B I U Second Tier Source MBA Data H Font Formulas M 12 A Data A G Review R School Name University of Chicago Harvard University B Undergraduate Data Northwestern University University of Pennsylvania University of Michigan Stanford University Columbia University Duke University Massachusetts Institute of Technology University of California-Berkeley Cornell University University of Texas -- Austin Brigham Young University Emory University Yale University View w 20 Dartmouth College New York University UCLA Indiana University University of Virginia University of North Carolina-Chapel Hill Southern Methodist University Carnegie Mellon University University of Notre Dame Alignment Arizona State University University of Southern California University of Maryland University of Washington Washington University Georgia Institute of Technology Vanderbilt University Wrap Text Merge & Center - M State Illinois General $ % Number C Massachusetts Illinois Pennsylvania Michigan California New York North Carolina Massachusetts California New York New Hampshire New York California Indiana Virginia North Carolina Texas 9 Pennsylvania Indiana Texas Utah Georgia Connecticut California Maryland Washington Missouri Georgia Tennessee Arizona P10_21 Microsoft Excel Conditional Format as Good Formatting Table - D Type Private Private Private Private Public Private Private Private Private Private Public Private Private Public Public Public Public Private Private Private Public Private Private Private Private Public Public Private Public Private Public E F Enrollment Avg GMAT 1144 713 1801 720 1200 711 714 706 726 1651 898 739 1234 878 780 500 593 506 832 731 473 644 562 Normal 2 201 392 316 552 315 373 382 525 257 225 294 156 382 159 4 696 708 714 694 712 708 711 663 693 678 642 690 677 681 673 680 718 692 660 688 681 681 656 676 Normal Neutral Styles G Resident Tuition, Fees 97165 101660 93918 104410 80879 97842 94104 95000 46784 66475 93000 91905 89184 66590 40882 84000 43503 81384 93840 77340 48800 18530 82856 93098 88800 60583 43556 83172 17816 81076 34082 Bad Calculation Insert 35 33 34 44 27 43 33 40 36 39 27 31 32 32 37 30 32 18 23 28 24 10 42 28 34 35 18 34 19 18 26 I 5.8 Delete Format Cells H I Pct International Pct Female 35 38 36 36 34 36 32 39 35 30 39 33 41 34 26 29 32 28 21 24 31 20 39 34 29 29 36 37 27 25 25 ++! AutoSum Fill 2 Clear - J Pct Asian Amer Sort & Find & Filter Select Editing A ? O Research Search for: Harvard University Bing Back 4 Bing (1-10 of 26300000) Next bing 4 Harvard University Harvard University is devoted to excellence in teaching, learning, and research, and to developing leaders in many disciplines who make a difference globally. www.harvard.edu 4 Harvard University - Wikipedia, the free encyclopedia X Harvard University is a private research university in Cambridge, Massachusetts (US), established 1636, whose history, influence and wealth have made it... https://en.wikipedia.org/wiki/H 4 Harvard College Harvard University harvard.edu. Harvard College Admissions & Financial ... Harvard College should and will set the standard for liberal arts and sciences education ... https://college.harvard.edu. Harvard University | Best College | US News Is Harvard University the best Research options... 100% X