Nokea
Very simple probability is:
- A. conditional probability
- B. marginal probability
- C. binomial probability
- D. both(b)&(c)
Correct Answer: B
Rationale: Marginal probability is a basic form of probability focusing on individual events.
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Define in your own words the term 'operations research'.
- A. The use of mathematical models to optimize healthcare delivery.
- B. Research focused on surgical procedures.
- C. Studies conducted in hospital operating rooms.
- D. Analysis of clinical trial data.
Correct Answer: A
Rationale: Operations research involves applying mathematical and analytical methods to optimize complex systems, such as healthcare delivery.
Confidence limit can be calculated by using
- A. Mean and range
- B. Mean standard deviation
- C. Median and range deviation
- D. Median and standard
Correct Answer: B
Rationale: Confidence limits are calculated using the mean and standard deviation.
If null hypothesis is rejected even if it is true is
- A. Type I error
- B. Type II error
- C. β error
- D. µ error
Correct Answer: A
Rationale: A Type I error occurs when the null hypothesis is incorrectly rejected.
Imparts of a table Heading of column is known as:
- A. Caption
- B. Head note
- C. Stabs
- D. None of them
Correct Answer: A
Rationale: Captions provide titles or explanations for columns in tables.
The impact of an exposure on a population does not depend upon:
- A. the strength of the association between exposure and disease.
- B. the prevalence of the exposure.
- C. the case fatality rate.
- D. the overall incidence rate of disease in the population.
Correct Answer: C
Rationale: The case fatality rate refers to the proportion of individuals with a disease who die from it. While important, it does not directly determine the impact of an exposure on a population. The impact depends more on prevalence, incidence, and strength of association.