Question

a random sample of people is chosen to participate in a survey. for the survey results to be considered valid, which must be true of the random sample? the sample must be the same size as the population. the sample must represent the target population. the sample must be biased. the sample must be a group separate from the population.

Explanation:

A valid random - sample in a survey should accurately reflect the characteristics of the target population. A sample the same size as the population is not a sample. A biased sample will skew results. A sample separate from the population won't represent it.

Answer:

B. The sample must represent the target population.