Please answer all the questions in the picture and please show all work to help me better understand how to answer questions similar to this in the future.

3d) (4 points)A particular school has an old, broken heating system. A co-worker feels that the system should have been replaced 20 years ago: it's really bad! To convince the state to provide more funding, you find the list of all teachers and ask every seventh teacher what the temperature of their classroom is during the winter. Type of Sampling: Level of Measurement of Data: 3e) (4 points)A particular hospital has horrible food. The doctors, nurses, respiratory therapists, and staff all talk about how the food is awful and how discouraging it is to go to the hospital cafeteria. You want better food too, but the Hospital President thinks the problem is being exaggerated. Out of the entire hospital staff, you choose 50 names at random and ask them to rate the food on a scale of one to five. 78% of the staff answers with a one or two. You were right