A Psychologist Is Collecting Data on the Time It Takes

question 13

Multiple Choice

A psychologist is collecting data on the time it takes to learn a certain task. For 50 randomly selected adult subjects, the sample mean is 16.40 minutes and the sample standard deviation is 4.00 minutes. Construct the 95 percent confidence interval for the mean time required by all adults to learn the task.

• A) [8.56, 24.24]
• B) [15.47, 17.33]
• C) [16.24, 16.56]
• D) [15.26, 17.54]
• E) [17.12, 48.48]

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Definitions:

Ekman

Refers to Paul Ekman, a psychologist known for his research on nonverbal behavior and the universality of facial expressions in conveying emotions.

Guilt

A negative emotional state associated with anxiety, tension, and agitation.

Vague Sense

An indistinct or unclear perception or understanding of something, often leaving one uncertain.

Secondary Emotion

Emotions that are a blend of primary emotions and include feelings such as guilt, shame, embarrassment, and pride.