Final answer:
The symbol x represents the sample mean, and the Greek symbol μ represents the population mean. The quantity μ is the population mean, while the quantity μx is the mean of all possible sample means. The quantity σ is the population standard deviation, while the quantity σx is the standard deviation of all the possible sample means.
Step-by-step explanation:
The symbol x is the sample mean, and the Greek symbol μ is the population mean. The quantity μ is the population mean, while the quantity μx is the mean of all possible sample means. The quantity σ is the population standard deviation, while the quantity σx is the standard deviation of all the possible sample means.