Need the answer to this geometry question, anyone know?

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?

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

Find the ratios of the corresponding sides