Does blood type determine your personality? In a study aimed atanswering this question, a random sample of 100 adults was given apersonality test, and a comparison was made between the scores onthe introversion/extroversion scale and blood type (A, B, AB,O).
(a) Is this an experiment, a retrospective observational study, ora prospective observational study?
(b) Comment on the extent to which inferences can be drawn about alarger population and whether cause and effect can beestablished.