An Educator Wanted to Look at the Study Habits of University

question 10

Multiple Choice

An educator wanted to look at the study habits of university students. As part of the research, data was collected for three variables - the amount of time (in hours per week) spent studying, the
Amount of time (in hours per week) spent playing video games and the GPA - for a sample of 20
Male university students. As part of the research, a 95% confidence interval for the average GPA of
All male university students was calculated to be: (2.95, 3.10) . Which of the following statements is
True?

• A)In construction of the confidence interval, a z-value with 20 degrees of freedom was used.
• B)In construction of the confidence interval, a t-value with 19 degrees of freedom was used.
• C)In construction of the confidence interval, a t-value with 20 degrees of freedom was used.
• D)In construction of the confidence interval, a z-value was used.

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Definitions:

Price of Earplugs

The amount of money required to purchase a set of earplugs, often dependent on brand, quality, and quantity.

Net Change

Net change refers to the difference in the closing price of a stock, bond, commodity, or index on a given day compared to the closing price on the previous trading day.

Utility Function

A mathematical representation of how different bundles of goods are ranked according to their utility or satisfaction provided to the consumer.

Equivalent Variation

A measure in economics that indicates the amount of money a consumer would need to reach their initial utility level after a price change.