Given,
The model of the disease is,
[tex]H(t)=\frac{0.95}{1+350e^{-0.125x}}[/tex]
For percentage multiplying with 100 then,
[tex]H(t)=\frac{0.95}{1+350e^{-0.125x}}\times100[/tex]
The graph of the model is,
So, from the it is clearly seen that at age of 48 the CHD is 50%.
Hence, at age 48 the likelihood of CHDequals 50%.
