What is the value of the finite population correction factor

What is the value of the finite population correction factor in the formula for sigma 2/X when

Solution

finite population correction = sqrt [ (N - n) / (N - 1) ].....

a) = sqrt [ ( 250 -5 ) / ( 250 - 1) ] = 0.991935...
b) = sqrt ( (500-10) / (500-1) ) =0.9909409......
c) = sqrt ( (5000-100) / (5000-1) ) = 0.9900485.........