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Answer on Statistics and Probability Question for vaibhav mishra

Question #39061
A disease is present in 22% of a population and is not present in the remaining
78%. An imperfect clinical test successfully detects the disease and with
probability 0.70. Thus if a person has the disease in the serious form, the
probability is 0.70 that the test will be positive and it is 0.30 if the test is negative.
Moreover among the unaffected persons, the probability that the test will be
positive is 0.05. (5)
(i) A person selected at random from the population is given the test and the
result is positive. What is the probability that the test will be positive is
(ii) What is the probability that the test correctly detects cancer?
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