Ben Has Used a Random Sample of 20,000 Respondents to Test

question 28

Multiple Choice

Ben has used a random sample of 20,000 respondents to test the relationship between participating in a summer reading program and children's reading scores in the following academic year.He observes a modest difference in reading scores by program participation and is able to reject the null hypothesis with a p-value of 0.04.When Ben presents his findings,his colleagues question whether the difference is very meaningful.Their concerns are most likely related to the fact that

• A)his sample might not be representative of the population of children in schools.
• B)he did not consider possible moderating variables.
• C)his sample was so large that he was almost certain to find statistical significance.
• D)a p-value is a very unreliable test for assessing statistical significance.

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Definitions:

Inventory

The total amount of goods and materials held in stock by a business or warehouse.

Depreciation

The systematic reduction of the recorded cost of a fixed asset over its useful life to reflect wear and tear or obsolescence.

Operating Cash Flow

The cash generated from normal operating activities of a business, reflecting its ability to generate sufficient cash to maintain operations.

Net Income

A company's overall income following the deduction of all expenditures and tax obligations from its total earnings.