Coefficient of variation of two distributions are 60 and 70, and their standard deviations are 21 and 16, respectively. What are their arithmetic means.

Explanation

To find the arithmetic means of the two distributions given their coefficients of variation and standard deviations, we can follow these steps:

### Step 1: Understand the formula for Coefficient of Variation (CV)
The Coefficient of Variation (CV) is defined as:
\[ CV = \frac{\sigma}{\bar{x}} \times 100 \]
where:
...