Instruction 15-11
Recent Studies Have Found That Australian Children Are

question 123

Multiple Choice

Instruction 15-11
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 |
$$\begin{array} { | l | c | c | c | c | } \hline \text { Weights } & 0 - 3 & 3 - 6 & 6 + & \text { Total } \\\hline \text { More than } 10 \text { kg overweight } & 1 & 9 & 20 & 30 \\\hline \text { Within } 10 \mathrm {~kg} \text { of normal weight } & 20 & 15 & 15 & 50 \\\hline \text { More than } 10 \mathrm {~kg} \text { underweight } & 10 & 5 & 5 & 20 \\\hline \text { Total } & 31 & 29 & 40 & 100 \\\hline\end{array}$$
-Referring to Instruction 15-11,how many children in the survey spend no more than 6 hours watching TV and are more than 10 kg underweight?

• A)15
• B)20
• C)10
• D)5

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Definitions:

Bulimia Nervosa

An eating disorder marked by recurrent episodes of binge eating followed by compensatory behaviors such as vomiting, fasting, or excessive exercise to prevent weight gain.

Binge Eating

The consumption of large quantities of food in a short period of time, often accompanied by feelings of loss of control and distress.

Ineffective Coping

A situation where an individual is unable to manage stressors or problems in a healthy or productive way.

Self-Induced Vomiting

A behavior where an individual deliberately provokes vomiting, often associated with eating disorders.