$np=7(0.36)=2.52 \uparrow 3$. The $36$-th percentile is $135$. 
The following are the weights (in pounds) of seven people: $100, 115, 135, 140, 180, 197, 230$. Find the $36$-th percentile. 
Options:
1) $$100$$ 
2) $$115$$ 
3) $$125$$ 
4) $$135$$ 