| Marks | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| No. of students | 3 | 4 | 1 | 0 | 4 | 5 | 2 | 1 |
The table above shows the distribution of marks of students in a test. Find the probability of passing the test if the pass mark is 5?
\(\frac{3}{5}\)
\(\frac{2}{5}\)
\(\frac{7}{20}\)
\(\frac{1}{5}\)
Explanation
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Discussions (10)
Good afternoon. I need a clarification from the working you gave to the question. I realized that you added the sum of numbers of students from 0 upward to the point of 1 in the table. I want to know the reason behind this (making use of the number of Students, and not the Mark) because we were asked to find the probability of passing the test if the pass mark is 5
The table below shows the numbers of pupils with their body weights.
Table 25.3
Weights(kg)
40
30
25
20
15
12
No of pupils
11
9
3
665
t
C
(a) How many pupils are there?
(b) Find the probability that if a pupil is chosen, the body weight is 25kg and above.
(c) What is the probability of a pupil having the body weight less than 20kg.
