To predict whether a heart attack is fatal, logistic regression is fitted. Y = 1, if the attack is fatal, 0 otherwise. The following model is found to be adequate

= -8.5 + 0.2*Age + 0.15*Smoking Status [here 'ln' stands for natural logarithm(i.e. logarithm to the base)]

Where Smoking Status = 1 if the person is a current smoker and 0 otherwise. Find the percentage probability that a 50-year-old non-smoker will have a fatal attack.