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The mean of 11 observations is 25 . If each observation is decrease...
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The mean of 11 observations is 25 . If each observation is decreased by 5 , the new mean will be
(1) 25
(2) 30
(3) 20
(4) 15
\( P \)
W
(1) 25
(2) 30
(3) 20
(4) 15
\( P \)
W