What is the probability that he does have covid

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Reference no: EM133937869

Assignment:

According to official estimates of a country, 1% of the population has infected Covid. Suppose one resident in this country took two Covid tests, A and B.

Each individual test has 1% type-I error and 1% type-II error. That is:

1% residents who has Covid is tested (falsely) negative;

1% residents who has no Covid is tested (falsely) positive.

a.) If this resident gets a positive result from test A, what is the probability that he does have Covid? (For this part a, you can ignore test B).

b.) Now consider both tests. If both tests A and B are positive, what is the probability that this resident has Covid?

c.) When answering the above questions, do you need to make any assumption(s)? If so, state the assumption(s) clearly.

Reference no: EM133937869

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