Mrs. Baker’s students write word problems for homework. Each week she selects one student's word problem to display on a bulletin board. 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 calculate the probability that an eighth grade student will NOT be selected, we first need to determine the total number of students included in the drawing. Let's assume there are a total of 30 students in Mrs. Baker's class.
Out of the 30 students, 1 is selected each week to have their word problem displayed on the bulletin board. This means that each week, there are 29 students who are not selected.
The probability of an eighth grade student not being selected can be calculated by taking the number of eighth grade students (let's say there are 10 eighth grade students) and dividing that by the total number of students who are not selected each week (29).
So the probability of an eighth grade student not being selected is 10/29.
To express this as a percentage, you would divide 10 by 29 and then multiply by 100 to get 34.48%.
Therefore, the probability of an eighth grade student not being selected is approximately 34.48%.