Four detergents' cleaning action were compared. Seventeen pieces of white cloth were first soiled with India ink. After washing the cloth pieces with four different detergents, the whiteness readings for the 17 pieces of cloth are shown below. Detergent C 73 78 A B 74 D 77 76 81 61 76 66 85 77 64 58 57 69
Four detergents' cleaning action were compared. Seventeen pieces of white cloth were first soiled with India ink. After washing the cloth pieces with four different detergents, the whiteness readings for the 17 pieces of cloth are shown below. Detergent C 73 78 A B 74 D 77 76 81 61 76 66 85 77 64 58 57 69
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![Four detergents' cleaning action were compared. Seventeen pieces of white cloth were first
soiled with India ink. After washing the cloth pieces with four different detergents, the
whiteness readings for the 17 pieces of cloth are shown below.
Detergent
A
B
C
D
77
74
73
76
81
66
78
85
61
58
57
77
76
69
64
69
63
Assuming all whiteness readings to be normally distributed with common variance, test the
hypothesis of no difference between the four brands' mean whiteness readings after washing.
Note: Do all calculation round off to two decimals.]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4cb71868-6f58-4dcf-8038-c59a628909aa%2Fcaa56530-9361-425c-9695-99a8a5fdf1f1%2Fd83zly_processed.png&w=3840&q=75)
Transcribed Image Text:Four detergents' cleaning action were compared. Seventeen pieces of white cloth were first
soiled with India ink. After washing the cloth pieces with four different detergents, the
whiteness readings for the 17 pieces of cloth are shown below.
Detergent
A
B
C
D
77
74
73
76
81
66
78
85
61
58
57
77
76
69
64
69
63
Assuming all whiteness readings to be normally distributed with common variance, test the
hypothesis of no difference between the four brands' mean whiteness readings after washing.
Note: Do all calculation round off to two decimals.]
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