If random samples,each with n = 4 scores,are selected from a normal population with µ = 80 and σ = 36,what is the standard error for the distribution of sample means?
A)4
B)9
C)18
D)36

Question

Quizplus · Accepted Answer

The formula for standard error is: 
standard error = standard deviation of population / square root of sample size.

Here, we have:
standard deviation of population (σ) = 36 
sample size (n) = 4

So, the standard error = 36 / sqrt(4) = 36 / 2 = 18.

Therefore, the best choice is C, with the standard error being 18.

If Random Samples,each with N = 4 Scores,are Selected from a Normal