If the probability that a household has a latrine is 0.72, what is the probability that a selected household does not have a latrine?
Correct answer: B. 0.28
- A. 0.18
- B. 0.28
- C. 0.72
- D. 1.72
Explanation
The probability of an event not occurring is calculated as 1 minus the probability of its occurrence. Therefore, 1.00 minus 0.72 equals 0.28.
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About Epidemiology and Biostatistics
Epidemiology examines the distribution and causes of disease by person, place and time, using measures such as incidence, prevalence, mortality and case-fatality rates. Biostatistics covers data presentation, sampling, averages, variability, probability and interpretation of study results, while distinguishing association from causation.
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