A pharmaceutical firm has discovered a new diagnostic test that has a 90% chance to indicate a positive result for a patient who is infected by a certain disease. If it is tried on 5 infected patients. (a)What is the probability that exactly 4 will be detected? (Round the answer to 4 decimal places) (b)What is the probability that at least two patient will be detected? (Round the answer to 4 decimal places) (c)What is the expected number of detected patients?
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