The sample and population of the given question are respectively; 4 people and all the spectators.
A population is defined as the entire group that you want to draw conclusions about. Meanwhile, a sample is the specific group that you will collect data from and as such the size of the sample is always less than the total size of the population.
In this question, we can see that the population is all the spectators while the sample are 4 people selected.
Read more about sample and population at; https://brainly.com/question/7301139