Question: Sampling students. A management student is planning to take a survey of student attitudes toward part-time work while attending college. He develops a questionnaire and

Sampling students. A management student is planning to take a survey of student attitudes toward part-time work while attending college. He develops a questionnaire and plans to ask 25 randomly selected students to fill it out. His faculty adviser approves the questionnaire but urges that the sample size be increased to at least 100 students. Why is the larger sample helpful?

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