For Testing the Difference Between Two Population Proportions,the Pooled Proportion

question 130

Multiple Choice

For testing the difference between two population proportions,the pooled proportion estimate is found by taking:

• A)the proportion of successes from sample 1 plus the proportion of successes from sample 2.
• B)the total number of successes in both samples divided by the total of both sample sizes.
• C)the difference between the proportion of successes in each sample.
• D)None of these choices.

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Definitions:

Variable Cost

Expenses that fluctuate in direct correlation with the volume of production or business operations.

Contribution Margin Ratio

A financial metric that represents the portion of sales revenue that is not consumed by variable costs and can contribute to covering fixed costs.

Break-Even Point

The point at which total costs equal total revenue, resulting in no profit but also no loss.

Mixed Costs

Expenses that contain both variable and fixed cost elements, changing in total with the level of activity but not in direct proportion.