Neonatal Mortality Rate (NMR) specifically measures deaths occurring: MCQ with Answer and Explanation

Neonatal Mortality Rate (NMR) specifically measures deaths occurring:
A. Between 28 days and 1 year of age
B. Within the first 24 hours of life
C. Within the first 28 days (0-27 days) of life
D. During childbirth only
Answer: Option C
Solution (By JKSSB Mock Tests)
NMR = (Deaths under 28 days / Live births) × 1,000. It isolates early infancy mortality, often reflecting quality of obstetric and immediate newborn care.

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Consider attributes: Vaccination (A) and Immunity (B). If (AB) = 150, (A) = 200, (B) = 300, N = 500, what type of association exists?
A. Independent
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Correct Answer: Option C


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Expected (AB) if independent = (200*300)/500 = 120. Actual (AB) = 150. Since Actual > Expected, the association is positive.

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Population density is highest in regions with:
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B. High altitude and extreme temperatures
C. Arid climate and poor soil
D. Political instability

Correct Answer: Option A


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Population density correlates with habitability factors: fertile soil, water, moderate climate, and jobs attract settlement, leading to high density in river valleys, coasts, and urban centers.

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Conditional probability P(B|A) is defined as P(A ∩ B) / P(A) provided that:
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The definition of conditional probability requires P(A) > 0 to avoid division by zero; if P(A)=0, P(B|A) is undefined.

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