You are investing $200 in a bank account. There are two options for interest: 1) 20% Compound Interest or 2) 30% Simple Interest. If you are investing for 20 years, find the total amounts for each option after 20 years.

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?