9. Consists of the Sun and everything that orbits the Sun 10. A celestial body that orbits a star
11. The force that pulls all objects with mass toward one another
12. Located between the orbits of Mars and Jupiter
13. The measure of gravity exerted on an object
14. The path followed by an object revolving around another object
15. The amount of matter in an object
16. The star around which the Earth orbits

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 upper quartile in the box plot?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)