Which of the following is NOT a recommended practice for ordering questions in a questionnaire?
A. Placing demographic questions at the beginning regardless of sensitivity
B. Starting with easy, non-sensitive questions to build rapport
C. Progressing from general to specific questions
D. Grouping questions on similar topics together
Answer: Option A
Solution (By JKExamLibrary)
Demographic questions, especially sensitive ones like income or caste, are often placed at the end to avoid respondent discomfort early in the survey, which could lead to dropouts.
If the probability of a student passing an exam is 0.8 and the probability of another student passing is 0.7, and these events are independent, the probability that at least one passes is:
Explanation:
For independent events, P(A∩B)=P(A)P(B)=0.3×0.4=0.12. Then P(A∪B)=P(A)+P(B)-P(A∩B)=0.3+0.4-0.12=0.58, applying the addition theorem with the independence condition.
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