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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
7.2.5 In a study of the nutritional requirements of cattle,
researchers measured the weight gains of cows during a 78-day period. For two breeds of cows, Hereford (HH) and Brown Swiss/Hereford (SH), the results are summa-
rized in the following table.6 [Note: Formula (6.7.1) yields
71.9 df.]
HH SH
![]()
q
n 33 51
(a)
SAMPLE 1 SAMPLE 2
q
n 8 5
![]()
![]()
y 100.2 106.8 SE(Y1 - Y2) = 5.7 with df = 10
(b)
SAMPLE 1 SAMPLE 2
q
n 8 8
y 18.3 13.9
s 17.8 19.1
![]()
Use a t test to compare the means. Use a = 0.10.
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