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In a medical study, patients are classiffied according to whether they have regular (RHB) or irregular heartbeat (IHB) and also according to whether their blood

In a medical study, patients are classiffied according to whether they have regular (RHB) or irregular heartbeat (IHB) and also according to whether their blood pressure is low (L), normal (N), or high (H). (a) Use counting rules to calculate how many different outcomes are there. (b) Use a tree diagram to represent the various outcomes that can occur

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