for a population with a mean of 120 and a standard deviation

for a population with a mean of 120, and a standard deviation of 24, how much error, on average would you expect between the sample mean and the population mean for a sample of 4 scores?

Solution

Mean = 120

Std deviation = 24

Std error = 24/rt n = 24/2 = 12

For a sample of 4 scores mean would be

120-12 to 120+12

(108, 132)