What does a z statistica z score based on a distribution of meanstell us about a sample

Question:

What does a z statistic—a z score based on a distribution of means—tell us about a sample mean?

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...