There are 150 students that Mrs. Smith teaches. She surveys her 4th period class, a total of 30 students, and finds that 75% of students surveyed preferred pepperoni pizza to cheese pizza. What is the population in this scenario?

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?