In a population of body-builders, it is found that = 201lbs and = 3.9. If

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In a population of body-builders, it is found that μ = 201lbs and σ = 3.9. If a body-builder has a weight of 190 lbs., how many standard deviations is the person from the average? (Round to the nearest tenth of a pound, and be sure to use the correct sign... + or -.)