In an investigation into eyewitness testimony, Dr. Aris observed that out of a sample of 54 eyewitnesses, 45 were able to correctly recall the weapon used by the perpetrator, while the remaining eyewitnesses were not.
Express the ratio of eyewitnesses who correctly recalled the weapon to those who did not in its lowest terms.
638 exam-style questions on Edexcel A Level Psychology Methods. Each one has a worked solution and a mark scheme showing where the marks go.