The table shown gives the marks scored by a group of student in a test. Use the table to answer the question given. Mark 0 1 2 3 4 5 Frequency 1 2 7 5 4 3 W...
The table shown gives the marks scored by a group of student in a test. Use the table to answer the question given.
Mark
0
1
2
3
4
5
Frequency
1
2
7
5
4
3
What is the probability of selecting a student from the group that scored 2 or 3?
Answer Details
To find the probability of selecting a student from the group who scored 2 or 3, we need to add the number of students who scored 2 and 3, and then divide that by the total number of students in the group.
The number of students who scored 2 is 7, and the number of students who scored 3 is 5. So, 7 + 5 = 12 students scored either 2 or 3.
The total number of students in the group is 1 + 2 + 7 + 5 + 4 + 3 = 22.
Therefore, the probability of selecting a student from the group who scored 2 or 3 is 12/22 = 6/11.