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The mean of the n observation x1, x2,…, ...

The mean of the n observation `x_1, x_2,…, x_n` be `barx` then the mean of n observations `2x_1+3, 2x_2+3,…,2x_n+3` is ______.

A

`3barx+2`

B

`2barx+3`

C

`barx+3`

D

`2barx`

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