A Researcher Obtains an Alphabetical List of the 2560 Students

question 13

Multiple Choice

A researcher obtains an alphabetical list of the 2560 students at a college. She uses a random number generator to obtain 50 numbers between 1 and 2560. She chooses the 50 students corresponding to those numbers. Does this sampling plan result in a random sample? Simple Random sample? Explain.

• A) Yes; no. The sample is random because all students have the same chance of being selected. It is not a simple random sample because some samples are not possible, such as a sample containing the first 50 students on the list.
• B) No; no. The sample is not random because not all students have the same chance of being selected. It is not a simple random sample because some samples are not possible, such as a sample containing the the first 50 students on the list.
• C) Yes; yes. The sample is random because all students have the same chance of being selected. It is a simple random sample because all samples of 50 students have the same chance of being selected.
• D) No; yes. The sample is not random because not all students have the same chance of being selected. It is a simple random sample because all samples of 50 students have the same chance of being selected.

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Definitions:

Cost Per Unit

Cost per unit is the total expense incurred to create or purchase a unit of product, calculated by dividing total costs by the number of units produced or purchased.

Fixed Factory Overhead

Costs related to the production that do not vary with the level of output, such as rent, salaries of permanent staff, and depreciation.

Variable Direct Labor

The portion of labor costs that varies directly with production volume.

Desired Profit

The profit amount that a company aims to earn in a specific period, typically set as a goal in financial planning.