A doctor claims of 60% of the patients he examines are allergic to some type of weed. What is the probability that (i) exactly 3 of his next 4 patients are allergic to weeds? (ii) none of his next 4 patients is allergic to weeds?

A doctor claims that 60% of the patients he examines are allergic to some type of weed.what is the probability that (i) Exactly three of his next four patients are allergic to weeds.

A doctor claims that 60% of the patients he examines are allergic to some type of weed.what is the probability that (ii)None of his next four patients is allergic to weeds.

Following are the ages (in years) of 360 patients , getting medical treatment in a hospital : One of the patients is selected at random What is the probability that his age is (i) 30 years or more but less than 40 years ? (ii) 50 years or more but less than 70 years ? (iii) 10 years or more but less than 40 years ? (iv) 10 years or more ? (v) less than 10 years ?

A doctor is to visit a patient. From the past experience, it is known that the probabilities that he will come by train, bus , scooter or by other means of transportation are respectiely 3/10,1/5,1/10 or 2/5 . The probabilities that he will be late are 1/4,1/3 and 1/12 if he comes by train, bus and scooter respectively but if he comes by other means of transport, then he will not be late. If the arrives late, find the probability that he comes by train.

A doctor is to visit a patient. From the past experience, it is known that the probabilities that he will come by train, bus , scooter or by other means of transportation are respectiely 3/10,1/5,1/10 or 2/5 . The probabilities that he will be late are 1/4,1/3 and 1/12 if he comes by train, bus and scooter respectively but if he comes by other means of transport, then he will not be late. If the arrives late, find the probability that he comes by train.