SOLUTION
The variance is calculated using:
[tex]\text{variance}=\text{npq}[/tex]n is the number of throw
Hence, n=25
p is the probability of success
Hence, p=60%=0.6
And q =1-p
Hence q = 0.4
Therefore the variance is calculated as
[tex]\text{variance}=25\times0.6\times0.4[/tex]Calculate the value:
[tex]\text{variance}=6[/tex]