A model airplane is built on the scale of 1 inch for every 22 feet. The length of the wing on a 727 airplane is 153 feet. Which of the following best represents the length of the wing on the model airplane?

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?