Answer:
The standard error of the mean equals 0.1
Step-by-step explanation:
We are given the following in the question:
Sample mean, [tex]\bar{x}[/tex] = 3 minutes
Sample size, n = 100
Population standard deviation, σ = 1 minute
Formula:
[tex]\text{Standard Error} = \displaystyle\frac{\sigma}{\sqrt{n}}\\\\= \frac{1}{\sqrt{100}} = \frac{1}{10} = 0.1[/tex]
Thus, standard error of the mean equals 0.1
