A population of values has a normal distribution with $\displaystyle \mu={129.3}$ and $\displaystyle \sigma={66.8}$. You intend to draw a random sample of size $\displaystyle {n}={225}$.

What is the mean of the distribution of sample means?
$\displaystyle \mu_{{\overline{{x}}}}=$

What is the standard deviation of the distribution of sample means? Also called the standard error.
(Round to exactly 2 decimal places.)
$\displaystyle \sigma_{{\overline{{x}}}}=$