A population that consists of 250 items has a mean of 37 and a standard deviation of 13. A sample of size 5 is taken at random from this population. The standard error of the sample mean equals (up to three decimal places):
A) 1.838 .
B) 1.648 .
C) 0.822 .
D) 2.715 .

Question

A population that consists of 250 items has a mean of 37 and a standard deviation of 13. A sample of size 5 is taken at random from this population. The standard error of the sample mean equals (up to three decimal places):  
A) 1.838 . 
B)  1.648 . 
C)  0.822 .
D) 2.715 .

Quizplus · Accepted Answer

The Answer of A population that consists of 250 items has a mean of 37 and a standard deviation of 13. A sample of size 5 is taken at random from this population. The standard error of the sample mean equals (up to three decimal places):  
A) 1.838 . 
B)  1.648 . 
C)  0.822 .
D) 2.715 .

A Population That Consists of 250 Items Has a Mean