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 first need to determine the total number of students in the class and the number of eighth grade students.
Let's say there are 30 students in total, including 10 eighth grade students.
The probability of an eighth grade student not being selected can be calculated as follows:
Number of eighth grade students not selected / Total number of students
= (Total number of students - Number of eighth grade students) / Total number of students
= (30 - 10) / 30
= 20 / 30
= 2/3
Therefore, the probability that an eighth grade student will NOT be selected is 2/3 or 66.67%.
The graph is
students Grads
Arthur 7
Jeff 6
Anita 7
Mitara 8
saree 8
bryan 7
micheal 8
susanna 6
Maria 6
To find the probability that an eighth grade student will not be selected, we need to count the total number of students (which is 9) and the total number of eighth graders (which is 4).
The probability can be calculated as follows:
Number of eighth grade students not selected / Total number of students
= (Total number of students - Number of eighth grade students) / Total number of students
= (9 - 4) / 9
= 5 / 9
Therefore, the probability that an eighth grade student will NOT be selected is 5/9 or approximately 55.56%.