If the co-efficient of variation of two distributions
\( \mathrm{P}... VIDEO
If the co-efficient of variation of two distributions
\( \mathrm{P}^{15} \) are \( 60 \% \) and \( 75 \% \) and their standard deviations are
W. 45 and 40 , then the ratio of their arithmetic means is
(1) \( 45: 32 \)
(2) \( 9: 10 \)
(3) \( 7: 8 \)
(4) \( 7: 10 \)
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