x̄ - > 2nd moment F distribution n=12 m=8

 To find the second moment of the F distribution with numerator degrees of freedom n=12 and denominator degrees of freedom m=8, we can use the following formula:

M2 = (m / (m - 2)) * (n + m - 2) / (n * (m - 4))

Substituting n=12 and m=8, we get:

M2 = (8 / 6) * (12 + 8 - 2) / (12 * (8 - 4)) = 1.7778

Therefore, the second moment of the F distribution with numerator degrees of freedom n=12 and denominator degrees of freedom m=8 is 1.7778.

2nd moment | 

F distribution | 

numerator degrees of freedom | 

n = 12 denominator degrees of freedom | 

m = 8

28/9≈3.11111