In a Controlled Laboratory Environment, a Random Sample of 10

question 68

Multiple Choice

In a controlled laboratory environment, a random sample of 10 adults and a random sample of 10 children were tested by a psychologist to determine the room temperature that each person finds
Most comfortable. The data are summarized below: $\begin{array}{lcc}\hline & \text { Sample Mean } & \text { Sample Variance } \\\hline \text { Adults (1) } & 77.5^{\circ} \mathrm{F} & 4.5 \\\text { Children (2) } & 74.5^{\circ} \mathrm{F} & 2.5 \\\hline\end{array}$

If the psychologist wished to test the hypothesis that children prefer warmer room temperatures than adults, which set of hypotheses would he use?

• A) \(H _ { 0 } : \left( \mu _ { 1 } - \mu _ { 2 } \right) = 0\) vs. \(H _ { 0 } : \left( \mu _ { 1 } - \mu _ { 2 } \right) = 0\)
• B) \(H _ { 0 } : \left( \mu _ { 1 } - \mu _ { 2 } \right) = 0\) vs. \(H _ { 0 } : \left( \mu _ { 1 } - \mu _ { 2 } \right) < 0\)
• C) \(H _ { 0 } : \left( \mu _ { 1 } - \mu _ { 2 } \right) = 3\) vs. \(H _ { 0 } : \left( \mu _ { 1 } - \mu _ { 2 } \right) \neq 0\)
• D) \(H _ { 0 } : \left( \mu _ { 1 } - \mu _ { 2 } \right) = 0\) vs. \(H _ { 0 } : \left( \mu _ { 1 } - \mu _ { 2 } \right) > 0\)

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Definitions:

Safe Social Interaction

Interactions that ensure the emotional and physical safety of individuals, promoting respectful and harm-free communication.

Lowering Defenses

Strategies or approaches to encourage an individual to be more open, vulnerable, and receptive to feedback, often used in therapy or conflict resolution.

Sarcastic Conversation

A form of verbal exchange where remarks are made that mean the opposite of what they seem to say, often used for humorous or ironic effect.

Interrupting Inappropriately

The action of breaking the flow of conversation or speech in a manner that is considered rude or not suitable to the context.