An insurance company divides the population of drivers into three groups (under 25 years of age, 26-64 years of age and over 65 years of age). The insurance company randomly selects a sample of 150 drivers under 25 years of age, a sample of 300 drivers aged 26-64 and a sample of 200 drivers over 65 years of age. What sampling technique was used

Can someone pls ! pls answer all. no explanation needed..

Line wx is parallel to line yz. if m

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?