A Large University Is Interested in Learning About the Average $\mathrm { z } = 2.551$

question 37

Multiple Choice

A large university is interested in learning about the average time it takes students to drive to campus. The university sampled 238 students and asked each to provide the amount of time they spent traveling to campus. This variable, travel time, was then used conduct a test of hypothesis.
The goal was to determine if the average travel time of all the university's students differed from 20 minutes. Suppose the sample mean and sample standard deviation were calculated to be 23.2 and 20.26 minutes, respectively. Calculate the value of the test statistic to be used in the test.

• A) \(\mathrm { z } = 2.551\)
• B) \(z = 2.437\)
• C) \(z = 37.59\)
• D) \(z = 0.173\)

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Definitions:

Collectivism

A social and cultural value that emphasizes the importance of groups and communities over individual achievement and interests.

Individualism

A perspective in social sciences that favors the autonomy of the individual over regulation by group norms or state laws.

Personal Privacy

The right of an individual to keep their personal information out of public view and to have control over their own personal data and the way it's used.

Narcissism

A personality trait characterized by an inflated sense of self-importance, a deep need for excessive attention and admiration, and a lack of empathy for others.