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A national study found that treating people appropriately for high blood pressure reduced their overall mortality by 20%. Treating people adequately for hypertension has been difficult becasue it is estimated that 50% of hypertensives do not know they have high blood pressure, 50% of those who do know are inadequately treated by their physicians, and 50% who are appropriately treated fail to follow this treatment by taking the the right number of pills.
what is the probability that among 10 true hypertensives at least 50% are being treated appropriately and are complying with this treatment

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