Name 3 planes parallel to FL

Abag of popcorn contains 483 calories and servers 3.5 people. how many calories are in each serving.

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

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?