In a Controlled Laboratory Environment, a Random Sample of 10

question 1

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: $$\begin{array} { l c c } \hline & \text { Sample Mean } & \text { Sample Variance } \\\hline \text { Adults (1) } & 77.5 ^ { \circ } \mathrm { F } & 4.5 \\\text { Children (2) } & 74.5 ^ { \circ } \mathrm { F } & 2.5 \\\hline\end{array}$$ Suppose that the psychologist decides to construct a 99% confidence interval for the difference in mean comfortable room temperatures instead of proceeding with a test of hypothesis. The 99% confidence interval turns out to be (-2.9, 3.1) . Select the correct statement.

• A) It cannot be concluded at the 99% confidence level that there is actually a difference between the true mean comfortable room temperatures for the two groups.
• B) It can be concluded at the 99% confidence level that the true mean comfortable room temperature for children exceeds that for adults.
• C) It can be concluded at the 99% confidence level that the true mean room temperature for adults exceeds that for children.
• D) It can be concluded at the 99% confidence level that the true mean comfortable room temperature is between -2.9 and 3.1.

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Definitions:

Unconscious Processes

Mental processes that occur without conscious awareness, influencing thoughts, feelings, and behaviors.

Ivan Pavlov

A Russian physiologist known for his work in classical conditioning, demonstrating the associative learning process through experiments with dogs.

John B. Watson

An American psychologist who established the psychological school of behaviorism, emphasizing the study of observable behavior over internal phenomena like feelings and thoughts.

Unconscious Motives

Underlying influences on behavior that stem from desires or feelings of which an individual is not aware.