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Mathematics
Problem
Sizes of two samples are 40 and 50. Population standard deviations are 10 and 20. Compute S.E.
(
X
ˉ
1
−
X
ˉ
2
)
(\bar{X}_1 - \bar{X}_2)
(
X
ˉ
1
−
X
ˉ
2
)
(April 2007)
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