In experiments, placing subjects in experimental groups such that each subject has an equal probability of ending up in any experimental group is referred to as Question 4 options: random selection. random sampling. random forecasting. random assignment.

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .