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A study of a new cholesterol drug measures the decrease in LDL (the bad cholesterol) of a group of 500 of patients. The drop in

A study of a new cholesterol drug measures the decrease in LDL (the "bad" cholesterol) of a group of 500 of patients. The drop in cholesterol followed an approximately Normal distribution: N(-20.0, 2). What is the probability that a person chosen at random will have a cholesterol drop of -20?

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