Using the same data obtained in Exercise 4, test the hypothesis that the variances are equal.

Data from in Exercise 4

Select two samples of 20 values from the data in Data Set IV in Appendix B. Test the hypothesis that the mean heights of the buildings are equal.

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Data Set IV Heights (in Feet) of 80 Tallest Buildings in New York City 1250 915 729 750 700 682 650 640 625 615 595 587 575 574 565 557 861 778 745 697 670 648 634 628 620 592 580 575 572 563 555 570 1046 856 757 743 716 687 664 630 628 620 614 590 580 575 562 555 952 850 752 739 707 687 674 653 645 630 618 609 588 577 570 561 552 927 814 750 730 705 685 673 650 630 629 615 603 587 576 574