Given data
Sample size ( Total possible outcomes ) = 25000
Number of households reported they had no firearm ( Required outcomes ) = 17000
The empirical probability that a randomly-selected household had no firearms in their home
[tex]\begin{gathered} =\frac{N\text{umber of required outcomes }}{N\text{umber of total possible outcome}}\text{ } \\ =\text{ }\frac{17000}{25000} \\ =\text{ }\frac{17}{25} \end{gathered}[/tex]Final answer
= 0.68