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A 95% confidence interval for the mean lead concentration in the urine of adult men working with lead (for smelting) is 8.22 to 11.98 micrograms per liter (g/l). The numerical value of the margin of error
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A 95% confidence interval for the mean lead concentration in the urine of adult men working with lead (for smelting) is 8.22 to 11.98 micrograms per

liter (g/l). The numerical value of the margin of error for this confidence interval is ______Mg/1.

User Revircs
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95% confidence = 2SD method.

11.98-8.22 = 3.76

3.76 / 2 = 1.88

ME= 1.88
User Mgrant
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