Giving a test to a group of students, the grades and gender are summarized below
A B C Total
Male 4 17 20 41
Female 15 7 19 41
Total 19 24 39 82
If one student is chosen at random,
Find the probability that the student did NOT get an "B"
To find the probability that the student did NOT get a "B", we need to consider the number of students who did not get a "B" and divide it by the total number of students.
Looking at the table, we can see that there are a total of 82 students. To find the number of students who did NOT get a "B", we need to subtract the number of students who got a "B" from the total number of students.
Number of students who did NOT get a "B" = Total number of students - Number of students who got a "B"
Number of students who did NOT get a "B" = 82 - 24 = 58
Therefore, there are 58 students who did NOT get a "B".
To find the probability that the student did NOT get a "B", we divide the number of students who did NOT get a "B" by the total number of students.
Probability = Number of students who did NOT get a "B" / Total number of students
Probability = 58 / 82
Simplifying this fraction, we get:
Probability = 29 / 41
So, the probability that the student chosen at random did NOT get a "B" is 29/41.
how many did not get B?
how many total?
divide