Exercise $3$:

A meat$-$processing company in Alberta produces and markets a package of eight small sausage sandwiches. The product is nationally distributed, and the company is interested in knowing the average retail price charged for this item in stores across the country. The company cannot justify a national census to generate this information. Based on the company information system's list of all retailers that carry the product, a company analyst contacts $36$ of these retailers

$1$