Use the Given Degree of Confidence and Sample Data to Construct

question 47

Multiple Choice

Use the given degree of confidence and sample data to construct a confidence interval for the population mean $\mu$ . Assume that the population has a normal distribution.
-A sociologist develops a test to measure attitudes towards public transportation, and 27 randomly selected subjects are given the test. Their mean score is 76.2 and their standard deviation is 21.4. Construct the 95%
Confidence interval for the mean score of all such subjects.

• A) \(74.6 < \mu < 77.8\)
• B) \(64.2 < \mu < 88.2\)
• C) \(69.2 < \mu < 83.2\)
• D) \(67.7 < \mu < 84.7\)

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Definitions:

Vessel Elements

Components of the xylem tissue in plants, specialized tube-like cells that transport water and nutrients vertically.

Labeling

Identifying the names of objects.

Motherese

The simplified and exaggerated language style often used by adults when talking to babies and young children, also known as "parentese" or "child-directed speech."

Echoing

The repetition or reflection of sounds, words, or sentiments, often used metaphorically to describe imitation in communication.