Question

identify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below. in a poll conducted by a certain research center, 1207 adults were called after their telephone numbers were randomly generated by a computer, and 19% were able to correctly identify the president. which type of sampling did the research center use? options: cluster sampling, random sampling, systematic sampling, convenience sampling, stratified sampling

Explanation:

Random sampling involves selecting samples where each member of the population has an equal chance of being chosen. Here, telephone numbers were randomly generated by a computer, so each adult with a telephone number had an equal chance of being called, fitting the definition of random sampling. Cluster sampling involves dividing the population into clusters and sampling entire clusters. Stratified sampling divides the population into strata and samples from each stratum. Systematic sampling selects every k-th element. Convenience sampling uses easily accessible samples. Since the selection was random via computer - generated numbers, it's random sampling.

Answer:

Random sampling (the option: Random sampling)