Chapter 14.5, Problem 6CFU

To determine

Find the standard error of the mean.

Answer to Problem 6CFU

  $0.22$

Explanation of Solution

Given information:

Given: $\sigma =3.4,N=250$

Calculation:

Here, to find the standard error we will use the following formula:

  $\begin{array}{l}{\sigma }_{\overline{X}}=\frac{Standarddeviation}{\sqrt{N}}\\ {\sigma }_{\overline{X}}=\frac{3.4}{\sqrt{250}}=0.22\end{array}$

Hence, the standard error is $0.22$ .