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Exam P：Probability機率題庫下載題庫

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178. In a large population of patients, 20% have early stage cancer, 10% have advanced stage cancer, and the other 70% do not have cancer. Six patients from this population are randomly selected.

Calculate the expected number of selected patients with advanced stage cancer, given that at least one of the selected patients has early stage cancer.
(A) 0.403
(B) 0.500
(C) 0.547
(D) 0.600
(E) 0.625

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