The following table represents the hypertension and smoking habit of 180 individuals.
Non Smokers Moderate Smokers Heavy Smokers
Hypertension 25 35 32
No Hypertension 44 27 17
One persons is picked at random from this group, find the probability that
i) The person is a heavy smoker
ii) The person is a non smokers given that the person has no hypertension
iii) The person is a moderate smokers given that the person has hypertension
iv) If two persons are picked at random calculate the probability that both are non smokers