Question

a radio station asks its listeners to call in their opinion regarding the closing of fire stations in the city. identify the sampling method used, and explain why this sample could be biased.

Explanation:

The sampling method is voluntary - response sampling as listeners choose to call in on their own. It could be biased because those with stronger opinions (either for or against the closing of fire stations) are more likely to call in. People with neutral views or those not listening at the time of the call - in may not participate, skewing the sample towards a particular viewpoint.

Answer:

Sampling method: Voluntary - response sampling. Reason for bias: People with stronger opinions are more likely to participate, and it excludes those with neutral views or not listening at the time.