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Used for LANTITE preparation (Australia). SP = Statistics & Probability strand. Students are asked two true/false questions based on a chart. The pair of true/false questions are randomly selected from a pool of five pairs of questions.

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The chart below can be used to determine whether a room will feel comfortable, for a given temperature and level of relative humidity.

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Points inside the shaded area should feel comfortable for most people.

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Points outside of the shaded area will not feel comfortable for most people.

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Use the chart to decide whether each statement below is True or False:

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Examine the chart, in particular noting the axis labels and scales, and read the question carefully.

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For the first statement:

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{explanation1}

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For the second statement:

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{explanation2}

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The randomly selected scenario.

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The first correct answer for the randomly selected scenario.

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Therefore the room would feel comfortable to most people, so the statement is true.\\\",\\n\\\"question2\\\":\\\"Raising the relative humidity in a room at $21$°C from $30\\\\\\\\%$ to $60\\\\\\\\%$ would improve the comfort level for most people.\\\",\\n\\\"answer2\\\":\\\"True\\\",\\n\\\"advice2\\\":\\\"The intersection of the $21$°C horizontal line and the $30\\\\\\\\%$ vertical line lies just outside of the shaded area.
Raising the relative humidity to $60\\\\\\\\%$ places the intersection just inside the shaded area, so the statement is true.\\\"\\n},\\n{\\n\\\"question1\\\":\\\"According to the chart, a room with temperature $31$°C could not be made to feel comfortable for most people, regardless of the humidity level.\\\",\\n\\\"answer1\\\":\\\"True\\\",\\n\\\"advice1\\\":\\\"The $31$°C horizontal line never passes within the shaded area.
Therefore the room could not be made to feel comfortable for most people regardless of the humidity level, so the statement is true.\\\",\\n\\\"question2\\\":\\\"According to the chart, lower room temperatures require lower relative humidity levels in order to feel comfortable for most people.\\\",\\n\\\"answer2\\\":\\\"False\\\",\\n\\\"advice2\\\":\\\"A temperature of $21$°C requires humidity levels around $50\\\\\\\\%$ to $70\\\\\\\\%$ for comfort, whereas a temperature of $27$°C requires humidity levels around $30\\\\\\\\%$ to $60\\\\\\\\%$ for comfort
The statement is therefore false.\\\"\\n},\\n{\\n\\\"question1\\\": \\\"According to the chart, a room with humidity level $65\\\\\\\\%$ could not be made to feel comfortable for most people, regardless of the temperature.\\\",\\n\\\"answer1\\\": \\\"False\\\",\\n\\\"advice1\\\": \\\"The $65\\\\\\\\%$ humidity vertical line passes through the shaded area.
Therefore the statement is false.\\\",\\n\\\"question2\\\":\\\"According to the chart, higher room temperatures require lower relative humidity levels in order to feel comfortable for most people.\\\",\\n\\\"answer2\\\":\\\"True\\\",\\n\\\"advice2\\\":\\\"A temperature of $21$°C requires humidity levels around $50\\\\\\\\%$ to $70\\\\\\\\%$ for comfort, whereas a temperature of $27$°C requires humidity levels around $30\\\\\\\\%$ to $60\\\\\\\\%$ for comfort
The statement is therefore true.\\\"\\n},\\n{\\n\\\"question1\\\": \\\"At a relative humidity level of $50$%, the temperatures that result in a comfortable room lie within a range of $7$°C.\\\",\\n \\\"answer1\\\": \\\"True\\\",\\n \\\"advice1\\\": \\\"The $50\\\\\\\\%$ vertical line enters the shaded area at $21$°C and exits it at $28$°C.
The difference between these two temperatures is $7$°C.
Therefore the statement is true.\\\",\\n\\\"question2\\\":\\\"Raising the temperature of a room with temperature $21$°C and relative humidity $40\\\\\\\\%$ by $2$°C would improve the comfort level for most people.\\\",\\n\\\"answer2\\\":\\\"True\\\",\\n\\\"advice2\\\":\\\"A room with relative humidity $40\\\\\\\\%$ and temperature $21$°C is just below the shaded area on the chart.
Increasing the temperature by $2$°C would move the intersection point into the shaded area.
The statement is therefore true.\\\"\\n},\\n{\\n\\\"question1\\\": \\\"A room with temperature $27$°C and relative humidity $70\\\\\\\\%$ would feel comfortable to most people.\\\",\\n \\\"answer1\\\": \\\"False\\\",\\n \\\"advice1\\\": \\\"The intersection of the $27$°C horizontal line and the $70\\\\\\\\%$ vertical line lies outside of the shaded area.
Therefore the room would not feel comfortable to most people, and the statement is false.\\\",\\n\\\"question2\\\":\\\"According to the chart, rooms with lower humidity levels have a larger range of comfortable room temperatures than rooms with higher humidity levels.\\\",\\n\\\"answer2\\\":\\\"True\\\",\\n\\\"advice2\\\":\\\"A room with a humidity level of $30\\\\\\\\%$ is comfortable between $22$°C and $30$°C. This is a range of $8$°C.
A room with humidity level at $70\\\\\\\\%$ is comfortable between $20$°C and $26$°C. This is a range of only $6$°C.
The statement is therefore true.\\\"\\n}\\n]\"))", "description": "
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The 7 possible T/F question pairs, each along with their correct answer, distractor and the Advice.

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The first question for the randomly selected scenario.

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The customised advice for the first question in the given scenario.

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The second question for the randomly selected scenario.

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The second correct answer for the randomly selected scenario.

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The customised advice for the second question in the given scenario.

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Below are some statements about the chart provided above.

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Select 'True or 'False' for each statement.

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