Coefficients of variation of two distributions are \( \mathrm{P}^{\...

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Coefficients of variation of two distributions are
\( \mathrm{P}^{\mathrm{n}} \) 15 and 20 and their means are 20 and 10

W respectively. If their standard deviations are \( \sigma_{1} \) and \( \sigma_{2} \) then
(1) \( 3 \sigma_{1} \)
(2) \( \sigma_{1}\sigma_{2} \)
(3) \( 2 \sigma_{1}=3 \sigma_{2} \)
(4) None of these
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