Voters are selected as they exit a local supermarket. This sampling method is an example of: O Cluster sampling O Simple random sampling O Convenience sampling O Stratified samplingVoters are selected are selected by choosing at random several of the city's zip codes and selecting all the voters from those selected zip codes. This sampling method is an example of: C) Cluster sampling 0 Systematic sampling 0 Convenience sampling 0 Simple random sampling Which of the following is an example of convenience sampling? 0 The human resources department of a large bank wanted to assess the job satisfaction of the bank's workers. The department chose ve of the bank's branches at random, and used all of the workers in those ve branches as the subjects for the study. 0 The Dean of Undergraduate Studies at a large state university wanted to study.r the online course attendance of the undergraduate students. For the study, a researcher chose a simple random sample of size 100 from each of the classes (100 freshmen, 100 sophomores, 100juniors, and 10D seniors}, fora total of 400 sampled students. 0 A sample of 250 people called a radio show to express their opinions about the results of the 2016 presidential election. 0 In order to assess customer satisfaction with the service at a restaurant, the rst 50 people that came out of the restaurant were interviewed. Which of the following is an example of cluster sampling? 0 A sample of 250 people called a radio show to express their opinions about the results of the 2016 presidential election. 0 The human resources department of a large bank wanted to assess the job satisfaction of the bank's workers. The department chose ve of the bank's branches at random, and used all of the workers in those ve branches as the subjects for the study. 0 The Dean of Undergraduate Studies at a large state university wanted to studyr the online course attendance of the undergraduate students. For the study, a researcher chose a simple random sample of size 100 from each of the classes (100 freshmen, 100 sophomores, 100 juniors, and 100 seniors}, for a total of 400 sampled students. 0 In order to assess customer satisfaction with the service at a restaurant, the rst 50 people that came out of the restaurant were interviewed. Which of the following is an example of stratied sampling? 0 A sample of 250 people called a radio show to express their opinions about the results of the 2016 presidential election. 0 The Dean of Undergraduate Studies at a large state university wanted to study the online course attendance of the undergraduate students. For the study. a researcher chose a simple random sample of size 100 from each of the classes (100 freshmenr 101E]I sophomoresr llljuniorsr and 100 seniors}r fora total of 400 sampled students. 0 The human resources department of a large bank wanted to assess the job satisfaction of the bank's workers. The department chose ve of the bank's branches at random, and used all of the workers in those ve branches as the subjects for the study. 0 In order to assess customer satisfaction with the service at a restaurant, the rst 50 people that came out of the restaurant were interviewed. Researchers gave some adult patients who volunteered u shots before the start of the u seasons and other volunteers were given a placebo to see how effective the vaccine was in preventing the flu. This studyr design is an example of: O Observational studv 0 Experiment 0 Survey.r Researchers compare the rates of u cases for children who did and did not receive the vaccine, to see how effective the vaccine is in preventing the u. This study design is an example of: O Observational studv O Survev 0 Experiment