Question

grade levels of student council members

	number of students
grade 8	34

every day, two student council members are randomly chosen to read the morning announcements. students cannot be chosen more than once to read the announcements. jeremy designed a simulation for the selection of the students and gathered data to predict the probability that a seventh - grade student will be chosen. in jeremys simulation, he rolls two number cubes in each of 40 trials. in each trial, a cube landing on 1 or 2 represents a student in grade 7 being selected, and a cube landing on 3, 4, 5, or 6 represents a student in grade 8.
which statement best describes the flaw in jeremys model?
the number of sides on a cube does not match the number of grade levels.
the number of sides on a cube is not a factor of the total number of students.
the number of outcomes representing each grade level does not change after the first student is chosen.
the number of outcomes representing a student in grade 7 is not the same as the number representing a student in grade 8.

Explanation:

In the real - world situation, once a student is chosen, the probabilities for the second - student selection change (since students cannot be chosen more than once). However, in Jeremy's simulation with number cubes, the probabilities for each roll remain the same regardless of the first roll. Each roll of the cube is an independent event, not accounting for the non - replacement in the actual student selection.

Answer:

The number of outcomes representing each grade level does not change after the first student is chosen.