Answer:
The variance is 53.29 kg²
Step-by-step explanation:
The standard deviation is the square root of the variance.
So
[tex]S(X) = \sqrt{V(X)}[/tex]
In which problem, we have that:
[tex]S(X) = 7.3[/tex]
So
[tex]\sqrt{V(X)} = 7.3[/tex]
[tex]\sqrt{V(X)}^{2} = (7.3)^{2}[/tex]
[tex]V(X) = 53.29[/tex]
The variance is 53.29 kg²
