Mathematical Methods · Unit 4 · Sampling and proportions · Random sampling
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A researcher wishes to survey a sample of 150 students from a high school with 1,200 students to determine their preferred study methods. Which of the following sampling procedures is most likely to ensure randomness in the selection process?
A researcher wants to select a random sample of 40 households from a community of 800 households to survey attitudes towards local recycling services. Which of the following procedures will ensure the sample is genuinely random?