divided by $0.5$ .

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None of these

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Solution

The correct option is C 64
Mean of $15$ observations $=$ $32$
Sum of $15$ observations $=$ $15 \times 32$ $=$ $480$
Since, each observation is divided by $0.5$ , new sum $=$ $\frac{15 \times 32}{0.5}$ $=$ $960$
Thus, new mean $=$ $= \frac{Sum}{Number of observations}$ $=$ $\frac{960}{15}$ $=$ $64$

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