Listening Quiz: Thiết Kế Lấy Mẫu Cho Khảo Sát Chất Lượng Trầm Tích – Easy Level

1. What are Sarah and Kevin mainly discussing?
2. Why does Sarah suggest using random sampling?
3. How many samples does Sarah say they need at minimum?
4. What does Sarah say they should do to keep the samples clean?
5. What can be inferred about when the sampling will begin?

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