a researcher wanted to determine whether eating hamburgers for lunch increased the aggression of second graders during their afternoon play period. after feeding a group of 20 students hamburgers for lunch she observed that, on average, the students committed 2.5 aggressive behaviors during their afternoon play period. in this example, which of the following describes the sample? A The 2.5 aggressive behaviorsB The 20 students the researcher observedC All second gradersD All second graders who ate hamburgers for lunch

The correct option is B) The 20 students the researcher observed.

Step-by-step explanation:

Consider the provided information.

Feeding a group of 20 students hamburgers for lunch she observed that, on average, the students committed 2.5 aggressive behaviors during their afternoon play period.

The sample space of the experiment or the random test is the set of all possible results or tests of the experiment.

Here, the possible results are the behaviors of 20 students.

Thus, the sample of the study is B) The 20 students the researcher observed.