Question

6. Refer to Table 14.7, Chapter 14.
Find the probability that a student obtained less than 20% in the mathematics
US
test.
usc!
(1) Find the probability that a student obtained marks 60 or above.​

Answer 1

Answer:Text Solution

Solution :

Here, the total number of students, N=90

Number of students those who obtained less than 20% marks El=7

Number of students those who obtained 60orabove marks Eg=15+8=23

(i)Probability a student obtained less than 20% marks, P(El)=ElN=790

(ii)Probability a student obtained 60orabove marks,  P(Eg)=EgN=2390

Step-by-step explanation: