Question

URGENT!!!
Select the correct answer.
A population has a standard deviation of 25.29. What is the approximate standard error of the mean for a sample size of 175?
The answer is 1.91 but can someone show me how they got that answer?
Will mark brainliest

Answer 1

Answer:

Standard error of the mean: 1.91

Step-by-step explanation:

The standard error of a sample mean is $SEM=\frac{\sigma}{\sqrt{n}}$ where $\sigma$ is the sample standard deviation and $n$ is the sample size. Therefore, the standard error of the mean for a sample size of 175 is $SEM=\frac{\sigma}{\sqrt{n}}=\frac{25.29}{\sqrt{175}}=1.911744304\approx1.91$