01/03/2017
A professor keeps data on students tabulated by the s*x and the performance of the student. Data is kept in a computer disk, but unfortunately some of it is lost because of a virus. Only the following could be recovered:
Performance Average Good Excellent Total
Male 10
Female 32
Total 30
Panic buttons were pressed but to no avail. An expert committee was formed,which decided that the following facts were self evident:
a) Half the students were either good or excellent.
b) 40% of the students were female
c) One third of male students were average
How many students were both female and excellent?
A) 0 B) 8 C) 16 D) 32
What proportion of good students are male?
A) 0 B) 0.73 C) 0.4 D) 1.0
What proportion of female students are good?
A) 0 B) 0.25 C) 0.50 D) 1.0
How many students are both male and good?
A) 10 B) 16 C) 22 D) 48
Among average students, what is the ratio of male to female?
A) 1:2 B) 2:1 C) 3:2 D) 2:3
https://youtu.be/LLvVcnq-UoY
A professor keeps data on students tabulated by the s*x and the performance of the student. Data is kept in a computer disk, but unfortunately some of it is ...
