NTANET (Based on NTAUGC) Computer Science (PaperII): Questions 1 of 2012
» Models for Information Channel » Probability, Entropy and Shannon's Measure of Information
Appeared in Year: 2015
MCQ▾
Question
Suppose that from given statistics, it is known that meningitis causes stiff neck 50 % of the time, that the proportion of persons having meningitis is 1/50000, and that the proportion of people having stiff neck is 1/20. Then the percentage of people who had meningitis and complain about stiff neck is: (December)
Choices
Choice (4)  Response  

a.  0.02% 

b.  0.05% 

c.  0.04% 

d.  0.01% 

Answer
a.
Explanation
Using Bayes’ Formula,