Q4: The school inspection
{"Image DocumentName": "Q4: The school inspection", "Image ImageDescription": "A schoolteacher knew that the school superintendent would visit the next day. The superintendent would ask questions such as spellings or mental arithmetic of the class, and the teacher would choose a pupil to answer. The teacher wanted to give the best impression of the school. What instructions did she give the children, in order to create the best impression and maximise the chances that the right answer was given to each question? Before the school inspector arrived, the teacher instructed the pupils always to raise their left hands. If they did not know the answer. All were unsure. If they were sure they knew their answer. They should raise their right hand. The teachers chooses a different people, every time, but always one who has raised Hughes or her right hand. The superintendent was duly impressed.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}