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Suppose that the TSH (Thyroid Stimulating Hormone) levels among healthy individuals are normally distributed with a mean of 3.2 units Suppose also that mL. exactly 95% of healthy individuals have TSH levels below 5.9 units ml . Find the standard deviation of the distribution of TSH levels of healthy individuals. Carry your intermediate computations to at least four decimal places. Round your answer to at least two decimal places. units X 5 ? mL