Mrs. Baker’s students write word problems each week, and she selects one student's word problem to display on a bulletin board each week. Each student's name is placed in a bag from which Mrs. Baker draws a name. What is the probability that an eighth grade student will NOT be selected?
EXPLAIN your process and give your answer as a % or simplified fraction.
To find the probability that an eighth grade student will not be selected, we need to first determine the total number of students in Mrs. Baker's class and the number of eighth grade students.
Let's say there are a total of 'n' students in Mrs. Baker's class and 'm' of them are eighth grade students.
The probability of selecting an eighth grade student is then m/n.
Therefore, the probability of not selecting an eighth grade student is 1 - m/n.
To give an exact answer, we would need to know the specific numbers of students in Mrs. Baker's class and how many of them are eighth graders.
If we assume that Mrs. Baker has only one class of 30 students and 10 of them are eighth graders, then the probability of not selecting an eighth grade student would be:
1 - 10/30 = 1 - 1/3 = 2/3.
Therefore, the probability that an eighth grade student will not be selected is 2/3 or approximately 66.67%.