Nokea
The truth about normal distribution curve is all except
- A. Mean median and mode of all confidence
- B. Standard deviation is one
- C. Mean of the curve is hundred
- D. The total area of the curve is one
Correct Answer: C
Rationale: The mean of a standard normal curve is 0, not 100.
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Health education on early diagnosis and treatment is
- A. primary prevention
- B. secondary prevention
- C. tertiary prevention
- D. primordial prevention
Correct Answer: B
Rationale: Secondary prevention involves early detection and intervention to halt or slow the progression of disease.
What is the RR of dying of coronary thrombosis for smokers versus nonsmokers?
- A. 1.2
- B. 1.3
- C. 1.4
- D. 1.5
Correct Answer: C
Rationale: RR = (Death rate among smokers / Death rate among nonsmokers) = 599 / 422 ≈ 1.42. Smokers have a 1.42 times higher risk of dying from coronary thrombosis compared to nonsmokers.
One of the main functions of DPHO is
- A. To increase community participation in health sector
- B. To manage the Health post in districts
- C. Health promotion and hospital management
- D. Supervision and control of sub-health post
Correct Answer: D
Rationale: DPHO primarily oversees and supervises sub-health posts.
Binomial distribution is
- A. Discrete distribution
- B. Continuous distribution
- C. Individual distribution
- D. Poisson distribution
Correct Answer: A
Rationale: The binomial distribution models discrete outcomes, typically successes and failures.
Define the following terms: synergism
- A. The combined effect of two factors is greater than the sum of their individual effects.
- B. The combined effect of two factors is less than the sum of their individual effects.
- C. The neutralization of one factor by another.
- D. The isolation of one factor from another.
Correct Answer: A
Rationale: Synergism occurs when two or more factors interact to produce an effect that is greater than the sum of their individual effects.