In order to assess the nutritional quality of meals offered…

In order to assess the nutritional quality of meals offered by meal kit subscription services in Australia, researchers randomly selected 12 meals from each of the five meal kit subscription services available in Australia and analyzed the nutritional quality of each meal. For the selected meals, the average number of servings of vegetables was 2.7 What type of sampling was used?

Researchers at a public university in New England wanted to…

Researchers at a public university in New England wanted to study the prevalence of food insecurity among students at their university. They posted flyers in several locations around campus asking students to participate in the study. The 237 students who responded to the flyers were asked to complete a survey concerning access to food and contributing factors. Of the students who completed the survey, 36 were food insecure. Which of the following best describes this sampling technique?