Chapter 13, Problem 13.5TI

The New York Choral Society divides male singers up into four categories from highest voices to lowest: Tenor1,

Tenor2, Bass1, Bass2. In the table are heights of the men in the Tenor1 and Bass2 groups. One suspects that taller men

will have lower voices, and that the variance of height may go up with the lower voices as well. Do we have good

evidence that the variance of the heights of singers in each of these two groups (Tenor1 and Bass2) are different?

Tenor1	Bass2	Tenor 1	Bass 2	Tenor 1	Bass 2
69	72	67	72	68	67
72	75	70	74	67	70
71	67	65	70	64	70
66	75	72	66		69
76	74	70	68		72
74	72	68	75		71
71	72	64	68		74
66	74	73	70		75
68	72	66	72

Table 13.11

13.5 |