Help me please.I need immediate help

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?

What is the relationship between all triangles that can be drawn given the same three angles

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer