Question

Identify each sample as biased or unbiased. Explain your reasoning.

Every fifteenth shopper at a clothing store is asked what they would want most for their birthday.

Short answer

The sample is unbiased because each shopper is equally to be the fifteenth shopper and no fifteenth shopper is favored over the other fifteenth shopper.

Step-by-step solution

Step 1. Identify each sample as biased or unbiased.

The sample is unbiased.

Step 2. Explain the reasoning.

The sample is unbiased because each shopper is equally to be the fifteenth shopper and no fifteenth shopper is favoured over the other fifteenth shopper.