2 MCQs in PSM for NEET PG
In a normal distribution, approximately what percentage of data falls within 2 standard deviations from the mean?
A screening program in Mumbai measured hemoglobin (Hb) levels in 500 healthy non-pregnant women aged 18–45 years. The mean Hb was 13 g/dL with a standard deviation of 1.5 g/dL. The program defines anemia as Hb < 12 g/dL. Assuming normal distribution, which of the following best represents the z-score for an Hb of 12 g/dL, and what does this indicate?
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