If \( \bar{X}_{1} \) and \( \bar{X}_{2} \) are the means of two dis...

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If \( \bar{X}_{1} \) and \( \bar{X}_{2} \) are the means of two distributions such that \( \bar{X}_{1}\bar{X}_{2} \) and \( \bar{X} \) is the mean of the combined
P distribution, then

W
(1) \( \bar{X}\bar{X}_{1} \)
(2) \( \bar{X}\bar{X}_{2} \)
(3) \( \bar{X}=\frac{\bar{X}_{1}+\bar{X}_{2}}{2} \)
(4) \( \bar{X}_{1}\bar{X}\bar{X}_{2} \)
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