Reference no: EM132851997
The Medical Center has developed a new program to teach patients about cardiovascular fitness. An evaluation is being conducted to determine how effective the program is with males and females of different ages. The evaluation design is experimental, with concurrent controls. In this design, the new and traditional cardiovascular programs are compared. About 310 people signed up for the winter seminar. Of these, 140 are between 45 and 60 years old, and 62 of these 140 are men. The remaining 170 are between 61 and 75 years old, and 80 of these are men. The evaluators randomly selected 40 persons from each of the four subgroups and randomly assigned every other person to the new program and the remainder to the old program.
-Identify the sampling method that was used. (Choose from the following sampling methods: simple random sampling, stratified sampling, cluster sampling, systematic sampling, or convenience sampling.)- Stratified sampling
-What is sampling being used to do in this study?
-State why the sampling method chosen is the appropriate choice. - Since the population is divided into subgroups, as we understand in the Stratified Sampling process, where all share the same characteristics. It is used when the interest calculation can fairly be expected to differ between the various subgroups, and we want to ensure representation from all the subgroups. Then, by taking equivalent sample sizes from each subgroup, the study sample is obtained. In stratified sampling, the option of non-equal sample sizes from each category may also be acceptable.
-Is this a probability or non-probability sampling method?
-What is the unit of analysis?
-What is being evaluated?
-What is the research hypothesis or question?
-What will the information gained from the study be used for?