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

question 23

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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 |
 Weights 03366+ Total  More than 10 kg overweight 192030 Within 10 kg of normal weight 20151550 More than 10 kg underweight 105520 Total 312940100\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,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?


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Land and the buildings on it, referred to especially in the context of business or law.

Rental Area

The specific portion of a property that is available for lease or rent to tenants.

Rent Ceilings

Government-imposed limits on the maximum amount that can be charged for renting a property, aimed at protecting tenants from excessive rent increases.

Transfer of Ownership

The process by which the rights of property or title are moved from one party to another.

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