Select the correct answer.
A population has a standard deviation of 11. What is the approximate standard error of the mean for a sample size of 150?
A.
2.70
B.
1.80
C.
0.90
D.
0.07
The correct answer is B. 1.80.
The standard error of the mean is calculated by dividing the standard deviation by the square root of the sample size.
Standard error of the mean = standard deviation / √sample size
= 11 / √150
≈ 11 / 12.25
≈ 0.90
Therefore, the approximate standard error of the mean for a sample size of 150 is 0.90.