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

question 60

True/False

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,the test is always a one-tailed test.

Identify the different quasi-experimental designs and their applications.

Recognize threats to internal validity in quasi-experimental designs.

Differentiate between one-shot case studies, one-group pretest-posttest designs, and nonequivalent control group designs.

Describe how maturation, history, testing, and instrumentation effects can impact research outcomes.

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Definitions:

Defence Mechanisms

Psychological strategies used unconsciously to protect oneself from anxiety arising from unacceptable thoughts or feelings.

Hatred

An intense dislike or ill will towards a person, group, or object, often characterized by hostility.

Repression

A defense mechanism where undesirable thoughts, memories, or desires are unconsciously blocked from conscious awareness.

Distressing Thoughts

Intrusive and upsetting thoughts that can cause significant emotional discomfort or anxiety.