Question

The percentage of marks obtained by a student in the monthly unit tests are given below :
(Unit test - % of marks obtained)
I - 68
II - 72
III - 75
IV - 70
V - 65
Find the probability that the student gets more than 70 % marks and in between 60 % to 70 % marks in unit test.

Answer 1

Answer:

2/5

Step-by-step explanation:

(Unit test - % of marks obtained)

I - 68

II - 72

III - 75

IV - 70

V - 65

Let put data in ascending order

65 , 68 , 70 , 72 , 75

total results available = 5

more than 70%  are 72  & 75

=> more than 70% = 2

probability of  more than 70% =2/5

60-70% including 70  are 65 , 68 , & 79

=> 60-70% including 70 are 3 values out of 5

probability of  60-70% including 70 =3/5

60-70% excluding 70  are 65 & 68

=> 60-70% excluding 70 are 2 values out of 5

probability of  60-70% excluding 70 =2/5

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