00:01
Alright, so here we have been provided a scenario and we have to tell that what is the correct null and alternative hypothesis and what type of test would be used to proceed this, right.
00:12
So, here it says that an investigator was interested in how beliefs and attitudes about treating incarcerated people change after increasing exposure to treating inmates, right.
00:23
They conducted a survey to 500 first year medical students prior to exposure treating and then again at graduation after they had experienced treating the incarcerated, right.
00:34
So here the survey consisted of 20 likert scale questions and a summary score was calculated and was found to be normally distributed.
00:44
Now the investigator hypothesized that medical student scores will increase from year 1 to year 4 as higher scores predict more sympathetic response to inmates.
00:53
Now here the first question is that what is the study design here, alright.
00:58
So in this case the type of study design is prospective cohort study, right.
01:09
So in prospective cohort study the group does not have the outcome although some participants usually have.
01:18
The next part of the question is that what are the null and alternative hypothesis that would be used in this case, right...