The mean of sample means is the same as the population mean so inOriginally Posted by bombo31
this case is $165,000
The standard deviation of sample means (usualy called the standard error)b. What is the standard deviation of ?
(All the symbols that are missing are the sample mean. (the x bar)
is , where is the population SD, and is the sample size.
So here it is $20000/10=$2000.