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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.]Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
HHÂ Â Â Â Â Â SH
![]()
q
n   33       51
Â
(a)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
          SAMPLE 1         SAMPLE 2  Â
q
n           8                     5
![]()
![]()
y           100.2              106.8       SE(Y1 - Y2)  =  5.7 with df  =  10
Â
(b)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
          SAMPLE 1        SAMPLE 2  Â
q
n           8                      8
Â
y   18.3    13.9
s    17.8    19.1
Â
![]()
Use a t test to compare the means. Use a = 0.10.
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