You Have Been Asked to Help Draw a Sample of Students

question 102

Multiple Choice

You have been asked to help draw a sample of students with the object being to evaluate a newly proposed grading system.Which statement would you want to guide your sample selection?

• A) With a population of 25,000 students, a sample of 25 is okay.
• B) Since seniors are more experienced, only include seniors in the sample.
• C) Randomly select a sample of 500 students from all students affected by the new grading system.
• D) A random sample of 500 students from among those taking a sociology course will be used.

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Definitions:

Corporate Bond

A debt security issued by corporations to finance their operations, which promises to pay the holder a specified rate of interest and return the principal at maturity.

Tax Bracket

A range of incomes taxed at a certain rate within a tax system, where the tax rate typically increases as income rises.

Before-tax Yield

The earnings or return on an investment before the deduction of any taxes.

Return on Investment

A measure used to evaluate the efficiency or profitability of an investment, expressed as a ratio or percentage of the investment’s gain relative to its cost.