answer all questions with explanation

Problem 3: A computer software rm is considering using a new training method to help programmers improve their productivity. In order to study the effectiveness of this new training method, before a large-scale programming project, 12 programmers were randomly selected to participate in the new training method and another group of 12 programmers used the traditional training method. 1 Those programmers' past experience levels were also included in the study, which were categorized as low-level experienced, medium-level experienced, and high-level experienced. Then, after their training, those programmers were all assigned similar tasks in the large project and their numbers of programmer-days to complete the tasks were recorded. Using the data, the rm studied how the training methods and the programmers' prior experiences could affect their performance. a. Basod on this dataset, identify the resPonSe variable, factors, factor levels, treatments, and the experimental unit of study. b. Is this study an experimental, observational or mixed study? If it is a mixed study, which factor is the experimental factor and which is the observation factor