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Difficulty: MediumEvaluating Argument Validity and Test of Variance

Consider the following argument: An agricultural biotechnology firm plans to market a automated seed-analysis device to commercial grain farmers. The firm predicts that launching this device will significantly increase its annual operating profits because the device reduces sample processing time by 50 percent, allowing farmers to test twice as many seeds in a single day without incurring additional labor costs.

Evaluating the following statement: Determining whether commercial grain farmers currently experience a bottleneck in seed testing that restricts their total volume of seed purchases is a relevant test of variance for evaluating the validity of the firm's profit prediction.

Answer: Answer

Answer

The statement is True. Evaluating whether farmers currently face a testing bottleneck passes the Test of Variance because opposite answers directly strengthen or weaken the conclusion that the device will increase operating profits.
The statement is correct because the proposed criterion directly satisfies the Test of Variance. If farmers are currently bottlenecked by testing speed, doubling speed creates real economic value and drives sales, strengthening the conclusion. If farmers have no unfulfilled testing demand, extra speed provides no incentive to purchase, weakening the conclusion.

Step-by-Step Solution

1
Deconstruct the argument structure
Premise: The new device reduces processing time by 50%, enabling farmers to test twice as many seeds at no extra labor cost. Conclusion: Marketing this device will significantly increase the firm's annual operating profits.
Identifying the link between the mechanism (higher processing capacity) and the outcome (increased profit) exposes the underlying assumption of market demand.
2
Apply the Test of Variance to the proposed evaluation criterion
Evaluate extreme outcome 1 (Yes, a bottleneck exists): Farmers need more capacity, so faster testing leads to increased device adoption and sales, supporting higher profits. Evaluate extreme outcome 2 (No, no bottleneck exists): Farmers already test all necessary seeds, so faster testing yields no added commercial value or extra sales, defeating the profit expectation.
The Test of Variance assesses whether opposite extreme answers to a question produce opposing impacts on the conclusion's logical strength.
3
Determine statement truth value
Since the proposed question produces opposite evaluative outcomes, it is a valid and crucial factor in assessing argument validity.
A factor that differentiates between a viable financial plan and an ineffective one is inherently relevant to evaluating argument validity.

Key Concept

Test of Variance in Evaluating Argument Validity
Estimated Time:1m 30s
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Topics

Evaluating Argument Validity and Test of Variance

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