Afinnesofa Study of twins Reared Apart investigated whether attributes of twins are related to hercopy environment. The researchers assessed 56 pairs of identical twins reared apart as well as several hundred identical twins reared together. They compared the similarities of the twins in both groups is this study an experiment or an observational study? experiment b) observational study 5. There are three children in room, age 3, 4, and 5. If a 4-year-old enters the room, the mean age and standard deviation will stay the same. the mean age and standard deviation will increase. the mean age will stay the same, but the standard deviation will increase. the mean age will stay the same, but the standard deviation will decrease. 6. For the following density curve, the median is