a researcher with the department

A researcher with the Department of Education followed a cohort of students who graduated from high school in a certain year, monitoring the progress the students made toward completing a bachelor's degree One aspect of his research was to determine whether students who first attended community college took longer to attain a bachelor's degree than those who immediately attended and remained at a 4 year institution. The data in the table attached below summarize the results of his study. Complete parts a) through a) below. Click here to view the stumple data. Click here to view Student's t-distribution table. a) What is the response variable in this study? What is the explanatory variable? O A. The response variable is the number of students. The explanatory variable is the time to graduate. O B. The response variable is the time to graduate. The explanatory variable is the use of community college or not. O C. The response variable is the time to graduate. The explanatory variable is the number of students. O'D. The response variable is the use of community college or not. The explanatory variable is the time to graduate. X Sample data Community No Transfer College Transfer C 273 1125 Sample mean time to 5.3B 4.46 graduate, in years Sample standard 1.171 1.023 deviation time to graduate, in years Print Done