You are a medical geographer interested in whether living ne…
You are a medical geographer interested in whether living near your hometown’s smelting plant is associated with asthma diagnosis. Your research team surveys 400 adults from your hometown, 200 of whom have asthma. They find that 120 of the 190 who live within 2 kilometers of the smelting plant have been diagnosed with asthma. Use the X2 statistic to test the association between asthma and proximity to the smelting plant. X2 value = _________
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