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$if the mean of x 1_{2}, x 2_{2},, x 3_{2} . . . . . . x_{n} is \bar{x}, then the mean of (2 x_{1} + 3), (2 x_{2} + 3), (2 x_{x} + 3) is$

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$2 \bar{x} + 3$

$2 \bar{x} - 3$

2 $\bar{x}$

$x ¯$

answer is D.

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Detailed Solution

$n + 1 2$

$n 2 n + 1 6$

Mean

$A . M$

$0, 1, 2, 3, ........., n$

$n n + 1 2 n + 1 6$

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