TABLE 12-12
Recent Studies Have Found That American Children Are

question 49

Multiple Choice

TABLE 12-12
Recent studies have found that American 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. We are interested in testing whether the average number of hours spent watching TV and weights are independent at 1% level of significance.
$$\begin{array} { l | c l l | r } &{ \text { TV Hours } } & \\\text { Weights } & 0 - 3 & 3 - 6 & 6 + & \text { Total } \\\hline \text { More than } 101 \mathrm { ls } \text {. overweight } & 1 & 9 & 20 & 30 \\\text { Within } 101 \mathrm { bs } \text {. of normal weight } & 20 & 15 & 15 & 50 \\\text { More than } 10 \mathrm { lbs } \text {. underweight } & 10 & 5 & 5 & 20 \\\hline \text { Total } & 31 & 29 & 40 & 100\end{array}$$
-Referring to Table 12-12, if there is no connection between weights and average number of hours spent watching TV, we should expect how many children to be spending 3-6 hours on average watching TV and are more than 10 lbs. underweight?

• A) 5
• B) 8
• C) 5.8
• D) 6.2

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Definitions:

Educational Growth

The process of acquiring knowledge, skills, values, and attitudes, leading to intellectual development and the expansion of one's understanding and capabilities.

Environmental Factors

Elements within the external surroundings that can influence an organism's development, behavior, and survival.

Anorexia Nervosa

A psychological and potentially life-threatening eating disorder characterized by an extremely low body weight, an intense fear of gaining weight, and a distorted perception of body weight and shape.

Bulimia Nervosa

An eating disorder characterized by binge eating followed by purging to avoid weight gain.