When random sampling is used, it means that

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Random sampling means that every member of a population has an equal chance of being selected. This eliminates bias and ensures that the sample is representative of the entire population. A is incorrect because selecting based on a specific trait would not result in a random sample. C is incorrect because if some members are more likely than others to be selected, then it is not truly random. D is incorrect because it would be impractical and unnecessary to sample every single member of a population.

When Random Sampling Is Used, It Means That