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

question 31

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,if there is no connection between weights and mean number of hours spent watching TV,how many children should you expect to be spending 3-6 hours on average watching TV and are more than 10 kg underweight?

• A) 6.2
• B) 8
• C) 5
• D) 5.8

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Definitions:

Pronouncing Words

The act of making the sounds of letters and syllables in the correct way when speaking.

Dress For Video Success

The concept of choosing appropriate attire for video conferences or recordings that enhances one’s professional image.

Organizational Signposts

Indicators or symbols within an organization that communicate core values, priorities, and directions to its members.

Gesturing

The use of physical movements, typically with the hands, to express ideas or emotions or facilitate communication.