The Data Below Show the Age and Favorite Type of Music

question 48

Essay

The data below show the age and favorite type of music of 779 randomly selected people.
Test the claim that age and preferred music type are independent. Use $\alpha = 0.05$ $$\begin{array} { l | c c c c } \text { Age } & \text { Country } & \text { Rock } & \text { Pop } & \text { Classical } \\\hline 15 - 21 & 21 & 45 & 90 & 33 \\21 - 30 & 68 & 55 & 42 & 48 \\30 - 40 & 65 & 47 & 31 & 57 \\40 - 50 & 60 & 39 & 25 & 53\end{array}$$

---

Definitions:

Isometric

Pertaining to muscle contractions where tension is developed without changing the length of the muscle.

Passive

Exhibiting or characterized by non-resistance or submission to external forces or influences.

Electromyography

A diagnostic procedure to assess the health of muscles and the nerve cells that control them (motor neurons) by recording the electrical activity.

Electrical Activity

Movements of ions that create electrical impulses, fundamental for the functioning of nerves and muscles, including the heart and brain.