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, 784 adults were called after their telephone numbers were randomly generated by a​ computer, and 35 % were able to correctly identify the president.

Answer 1

Answer: Random sampling

Step-by-step explanation:

• A random sampling technique is a method of sampling in which each member for the sample is chosen randomly from the population.
• Systematic sampling :  It is a kind of random sampling in which the members get selected after a fixed interval but a random starting point.
• Convenience sampling : It is a kind of random sampling in which the members get selected on the basis of researchers convenience.
• Stratified sampling :  It is a kind of random sampling in which the entire population is divided into a finite number of strata , the researcher select members for sample from each strata.
• Cluster sampling : It is a kind of random sampling in which the entire population is divided into clusters. Then a random sample of cluster is drawn by researcher.

In the given situation , 784 adults are selected after their telephone numbers were randomly generated by a​ computer.

Therefore , the  type of sampling used​ here is :  random sampling