Use the report of statistical research to identify the following. a) whether it was an observational study or an experiment b) whether it was retrospective or prospective c) the subjects studied, and how they were selected d) the parameter of interest e) the nature and scope of the conclusion regarding what the results may or may not indicate In a test of 1000 men and women, those with high blood pressure did worse on tests of memory and reaction time than those with normal blood pressure. . . . . . a) Identify whether it was an observational study or an experiment. The statistical research was an |observational study b) Identify whether the study was retrospective or prospective. The study was |prospective c) Identify the subjects studied, and how they were selected. O A. Men and women with high blood pressure; subjects were self selected. O B. Men and women with high and normal blood pressure; unknown selection process. O C. Men and women with high blood pressure; unknown selection process. O D. Men and women with high and normal blood pressure; subjects were randomly selected. d) Identify the parameter(s) of interest