Instruction 15-14
Recent Studies Have Found That Australian Children Are

question 93

Multiple Choice

Instruction 15-14
Recent studies have found that Australian children are more obese than in the past. The amount of time children spent watching television has received much of the blame. A survey of 100 ten-year-olds revealed the following with regards to weights and average number of hours a day spent watching television. You are interested in testing whether the average number of hours spent watching TV and weights are independent at 1% level of significance.
| TV Hours |
$$\begin{array} { | l | c | c | c | c | } \hline \text { Weights } & 0 - 3 & 3 - 6 & 6 + & \text { Total } \\\hline \text { More than 10 kg overweight } & 1 & 9 & 20 & 30 \\\hline \text { Within 10 kg of normal weight } & 20 & 15 & 15 & 50 \\\hline \text { More than 10 kg underweight } & 10 & 5 & 5 & 20 \\\hline \text { Total } & 31 & 29 & 40 & 100 \\\hline\end{array}$$
-Referring to Instruction 15-14,the value of the test statistic is

• A) 8.532.
• B) 18.889.
• C) 69.744.
• D) 15.483.

---

Definitions:

Four Corners Region

An area in the Southwestern United States where the states of Arizona, New Mexico, Utah, and Colorado meet, known for its unique geological features and rich Native American heritage.

Painted Desert

A desert in the southwestern United States known for its colorful layers of sedimentary rock and unique geological features.

Teotihuacano Murals

Wall paintings from the ancient city of Teotihuacán, reflecting the rich mythology, religious beliefs, and daily life of its inhabitants.

Ritual Activity

Ceremonial practices or actions performed in a prescribed order, often religious or cultural, to achieve a specific end.