The percentage of marks obtained by a student in the monthly unit tests are given below:
Find the probability that the student gets
1. More than 70% marks
2. Less than 70% marks
3. A distinction
1: Let E be the event of getting more than 70% marks
No of times E happens = 3
Probability (Getting more than 70\%) $=\frac{\text { Number of times student got more than 70 }}{\text { Total no of exams taken }}$
= 3/5 = 0.6
2. Let F be the event of getting less than 70% marks
No of times F happen = 2
Probability(Getting less than $70 \%)=\frac{\text { Number of times student got less than } 70}{\text { Total no of exams taken }}$
= 2/5 = 0.4
3. Let G be the event of getting distinction
No of times G happen = 1
Probability(Getting distinction) $=\frac{\text { Number of times student got distinction }}{\text { Total no of exams taken }}$
=1/5 = 0.2
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