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2. As a result of research conducted by those working in a coal mine, they found that the coals filled in sacks were distributed

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2. As a result of research conducted by those working in a coal mine, they found that the coals filled in sacks were distributed normally with a standard deviation of 50 kg and 2 kg. Find the possibilites given below for a sack that is randomly chosen; a) More than 49 kg b) Between 47 kg and 52 kg c) Between 51 kg and 53 kg

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