Question : The mean proportion of 0.03 and 0.27 is:
Option 1: 0.09
Option 2: 0.06
Option 3: 0.03
Option 4: 0.15
Correct Answer: 0.09
Solution : We know, the mean proportion of two numbers, $a$ and $b$ is $\sqrt{ab}$. Here, $a = 0.03$ and $b = 0.27$ So, mean proportion = $\sqrt{ 0.03 \times 0.27}=\sqrt{0.0081}=0.09$ Hence, the correct answer is 0.09.
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