MATH 225N Week 1 Assignment Comparing Sampling Methods Q & A

MATH 225N Week 1 Assignment Comparing Sampling Methods Q & A A television station plans to send a crew to a polling center on an election day. Because they do not have time to interview … each individual voter, they decide to count voters leaving the polling location and ask every 20th voter for an interview. What type of sampling is this? In order to study the shoe sizes of people in his town, Billy samples the population by dividing the residents by age and randomly … selecting a proportionate number of residents from each age group. Which type of sampling is … ? The management of a large airline wants to estimate the average time after takeoff taken before the crew begins serving snacks and beverages on their flights. Assuming that management has easy access to all of the information that … would be required to select flights by each proposed method, which of the following would be reasonable methods of stratified sampling? Select all that apply. To study the mean respiratory rate of all people in his state, Frank samples the population by dividing the residents by towns and … randomly selecting 12 of the towns. He then collects data from all the residents in the selected towns. Which type of sampling is … ? When is stratified sampling appropriate? In reference to different sampling methods, cluster sampling includes the steps: use simple random sampling to select a set of groups; every individual in the chosen groups is included in the sample.