Sampling Distributions for Sample Means Practice Test

A manufacturer produces resistors with mean resistance $\mu=100\ \Omega$ and population standard deviation $\sigma=8\ \Omega$. Individual resistances are approximately normal. A quality engineer repeatedly selects simple random samples of size $n=16$ and records the sample mean resistance $\bar{x}$. Which statement about the sampling distribution of $\bar{x}$ is correct?

A website’s page-load times (in seconds) for all visits have mean $\mu=3.2$ and a large standard deviation; the distribution is strongly left-skewed due to a hard lower bound near 0 seconds. A data analyst repeatedly takes random samples of $n=50$ visits and calculates $\bar{x}$ for each sample. Which statement about the sampling distribution of $\bar{x}$ is correct?