This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
[{'content': 'Mean hemoglobin of a group of pregnant females is found to be 10.6 gm/dL with Standard deviation of 2 gm/dL. 5% pregnant females in this group will have their hemoglobin level below \nSelect and explain. \nA. 7.31 gm/dL, B. 8.6 gm/dL, C. 6.6 gm/dL, D. 5.0 gm/dL', 'role': 'user'}, {'content': 'Answer: A \nExplanation: • Mean + 1SD covers 68% values; So, Hb of 68% pregnant females will lie between 10.6 + 2 gm/dL or between 8.6-12.6\ng/dL\n- So, 16% will lie below 8.6 gm/dL\n• Similarly, Mean + 2SD covers 95% values; So, Hb of 95% pregnant females will lie between 10.6 + 2(2) gm/dL or between 6.6-14.6 gm/dL\n- So, 2.5% will lie below 6.6 gm/dL\n• So 5% pregnant females will have Hb below 7.31 gm/dL', 'role': 'assistant'}]