mean & std.dev of all possible mean?

if somebody knows how to help me that would be appreciated!

According to U.S. Bureau of Labor Statistics publication news, self-employed persons with home based
businesses work a mean of 23 hours per week at home with a standard deviation of 10 hours.

(a) For a sample of size 100, ?nd the mean and standard deviation of all possible sample mean hours
worked per week at home.
(b) Repeat part (a) for a sample of size 1000.

EXACTLY the same as the others.

Mean is the same
Standard Deviation is the population mean divided by the square root of the sample size.

Every time.