A marketing research firm is testing consumer reactions to odorless charcoal briquettes by asking people in the community to test the briquettes and then following up with a telephone survey to learn how they feel about the product.The firm has found that different samples from the same general population give remarkably different survey results.The firm's test most likely lacks

Question

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The fact that different samples from the same general population give remarkably different survey results suggests that the test lacks reliability, meaning that it does not produce consistent results.

A Marketing Research Firm Is Testing Consumer Reactions to Odorless