12.1 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 69 72 71 66 76 74 71 66 68 Table 12.2 Bass2 72 75 67 75 74 72 72 74 72 Tenor 1 67 70 65 72 70 68 64 73 66 Bass 2 72 74 70 66 68 75 68 70 72 Tenor 1 Bass 2 68 67 67 70 64 70 69 72 71 74 75
12.1 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 69 72 71 66 76 74 71 66 68 Table 12.2 Bass2 72 75 67 75 74 72 72 74 72 Tenor 1 67 70 65 72 70 68 64 73 66 Bass 2 72 74 70 66 68 75 68 70 72 Tenor 1 Bass 2 68 67 67 70 64 70 69 72 71 74 75
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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Question
1 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?
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