Question

fill in the blank.
the standard deviation of the distribution of sample means is
the standard deviation of the distribution of sample means is

Explanation:

The standard deviation of the distribution of sample means (also known as the standard error) is calculated as the population standard deviation ($\sigma$) divided by the square root of the sample size ($n$). This is a fundamental concept in sampling distributions.

Answer:

$\frac{\sigma}{\sqrt{n}}$