Answer:
standard deviation of the distribution = 6.325.
Step-by-step explanation:
i) standard deviation of the population σ = 20
ii) size of sample n = 10.
iii) standard deviation of the distribution = [tex]\frac{\sigma}{\sqrt{n}} = \frac{20}{\sqrt{10}} = \frac{20}{3.162} = 6.325[/tex]
