Solution: The standard error of the mean is given below:
[tex] \frac{20}{\sqrt{4}} [/tex]
[tex] 10 [/tex]
Therefore the standard error of mean is 10
Answer:
10
Step-by-step explanation:
Thinking process:
The standard error is given by this formula: [tex]SE = \frac{\sigma }{\sqrt{n} }[/tex]
where SE is the standard error
[tex]\sigma[/tex] = the standard deviation
n = sample size or the number of items
Then the error is given by:
[tex]SE = \frac{20}{\sqrt{4} } \\ = \frac{20}{2} \\ =10[/tex]
Therefore, the standard error is 10
