A Regional Hardware Chain Is Interested in Estimating the Proportion

question 163

Multiple Choice

A regional hardware chain is interested in estimating the proportion of their customers who own their own homes. There is some evidence to suggest that the proportion might be around 0.70. Given this, what sample size is required if they wish a 90 percent confidence level with a margin of error of ±.025?

• A) About 355
• B) Approximately 910
• C) Almost 1,300
• D) 100

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Definitions:

Contribution Format Income Statement

An income statement format that separates variable and fixed costs, making it easier to see the contribution margin.

Contribution Margin

The revenue remaining after deducting variable costs, which contributes to covering fixed costs and generating profit.

Direct Manufacturing Cost

Expenses directly associated with the production of goods, including direct materials and direct labor costs.

Indirect Manufacturing Cost

Costs related to production that are not directly tied to a specific product, such as maintenance, supervision, and utilities.