Discussion

Explanation:

Since 40% of the students were females, i.e., 32 students. Total number of students was 80 and total number of male students was 48. Since half of the students were either excellent or good, (number of average students) = (number of good students + number of excellent students) = 40, number of excellent students = 40 – 30 = 10. As 1/3rd of male students were average, total number of male students that were average = $\left(\frac{1}{3}\times 48\right)$ = 16 and hence, total number of male students that were good = (48 – 16 – 10) = 22.

Based on the above revelations, the following table can be drawn:

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Proportion of female students who were good = $\left(\frac{8}{32}\right)$ = 0.25.

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