Clara conducted research into the effectiveness of the cognitive interview technique on eyewitness recall. She recorded the number of correct details recalled by eyewitnesses under two conditions. The eyewitnesses who were interviewed using the cognitive interview had a mean score of 14.8 correct details. The eyewitnesses who were interviewed using a standard police interview had a mean score of 8.3 correct details. Both groups consisted of different participants.
State which statistical test Clara would use to analyse her data.
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.