Chapter 14.5, Problem 10CFU

To determine

Find the standard error of the mean.

Answer to Problem 10CFU

  $0.2$

Explanation of Solution

Given information:

Given: $\sigma =1.8,N=81$

Calculation:

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

  $\begin{array}{l}{\sigma }_{\overline{X}}=\frac{Standarddeviation}{\sqrt{N}}\\ {\sigma }_{\overline{X}}=\frac{1.8}{\sqrt{81}}=0.2\end{array}$

Hence, the standard error is $0.2$ .