The Registrarʹs Office at State University Would Like to Determine

question 57

Multiple Choice

The registrarʹs office at State University would like to determine a 95% confidence interval for the mean commute time of its students. A member of the staff randomly chooses a parking lot and
Surveys the first 200 students who park in the chosen lot on a given day. The confidence interval is

• A)not meaningful because the sampling distribution of the sample mean is not normal.
• B)meaningful because the sample size exceeds 30 and the Central Limit Theorem ensures normality of the sampling distribution of the sample mean.
• C)meaningful because the sample is representative of the population.
• D)not meaningful because of the lack of random sampling.

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Definitions:

Wage Rate

The amount of money paid to an employee by an employer for work performed, usually expressed per hour or per unit of work.

Employment

The state of having a paid job or the total number of people employed within an economy.

Market Pricing

The process of determining the price of a product or service based on supply and demand dynamics in the market.

Excess Supply

The situation where the quantity of a good or service supplied is greater than the quantity demanded at the current price.