TEST: Chapter 3 What is the purpose of the random assignment of treatments to subjects in an experiment?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

What is the total surface area of this square pyramid?

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?