To find the probability for each question, we need to divide the number of favorable outcomes by the total number of possible outcomes.
a. The probability that the student will be a male is given by:
Number of male students / Total number of students
= 25 / 100
= 0.25
b. The probability that the student will score 3 points & above is given by:
Number of students who scored 3 points & above / Total number of students
= (30 + 25) / 100
= 0.55
c. The probability that the student will be a male given that they have scored 3 points & above is given by:
(Number of male students who scored 3 points & above) / (Number of students who scored 3 points & above)
= 30 / (30 + 25)
= 0.545
d. The probability that the student will score below 3 points given that they are female is given by:
(Number of female students who scored below 3 points) / (Number of female students)
= 20 / 20
= 1
Exercise: Average grade points of 100 randomly selected AMU Mechanical students (2014 E.C graduates).
Below 3points
Male=25
female=20
3points & above
male=30
female=25
Randomly select one student from 100 students. find the probability that this student
a. will be a male?
b. score 3points & above?
c. will be a male given that a student has scored 3points & above.
d. will score below 3points given that a student has been female?
1 answer
1 answer