If the standard deviation of \( x_{1}, x_{2}, \ldots x_{n} \) is 3.5 , then the standard deviati....

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If the standard deviation of \( x_{1}, x_{2}, \ldots x_{n} \) is 3.5 , then
\( \mathrm{P} \)
the standard deviation of \( -2 x_{1}-3,-2 x_{2}-3, \ldots \ldots \), \( -2 x_{n}-3 \) is
W
(1) -7
(2) -4
(3) 7
(4) 1.75



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