Exhibit 19

question 12

Multiple Choice

Exhibit 19.3 Use the information below to answer the questions.
A major car manufacturer was interested in whether its midsize car was selling consistently in two markets with respect to the annual income of the car purchasers.500 new car buyers in Chicago and Miami were surveyed.In Chicago the following pattern was observed:
Among those surveyed in Miami,20 earned under $20,000;70 earned between $20,000 and $30,000;265 earned between $30,000 and $40,000;125 earned between $40,000 and $50,000;and 20 earned more than $50,000.
Refer to Exhibit 19.3.The chi-square test was used to check whether Miami sales among income groups were consistent with Chicago's.The appropriate degrees of freedom for the chi-square test would be

• A)4
• B)5
• C)500
• D)499
• E)None of the above.

---

Definitions:

Over-the-counter Pain Medication

Medicines available without a prescription used to relieve pain, such as ibuprofen or acetaminophen.

Calisthenics

A form of exercise consisting of a variety of gross motor movements; often performed rhythmically and without equipment.

Muscular Strengthening

The process of increasing the strength and endurance of the body's muscles through exercise.

Sports Drinks

Beverages formulated to help athletes rehydrate, as well as replenish electrolytes, sugar, and other nutrients during intense physical activity.