12 students have an equally likely chance of being selected in school eight are 7th graders and four are 8th grades what is the probability
of selecting a 7th grader?
The total number of students is 12, and 8 of them are 7th graders. Therefore, the probability of selecting a 7th grader is:
8/12 or 2/3 (simplified)
This can also be expressed as a percentage:
2/3 = 66.67%
To find the probability, we need to divide the number of favorable outcomes by the number of possible outcomes.
In this case, the number of favorable outcomes is the number of 8th graders, which is 4.
The number of possible outcomes is the total number of students, which is 12.
Therefore, the probability of selecting an 8th-grade student is 4/12 or 1/3.
So, the probability of selecting an 8th-grade student is 1/3.