Question

Example 7 : The percentage of marks obtained by a student in the monthly unit tests
are given below:
Table 15.9
Unit test
I
I
II
III
IV
V
69
71
73
68
74
Percentage of
marks obtained
Based on this data, find the probability that the student gets more than 70% marks in
a unit test.​

Answer 1

Explanation:

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Answer 2

Answer:

Step by step Explanation =There are 5 units of test conducted of ,i-69,ii-71,iii-73,iv-68 and v-74

i-The number of test conducted =5

The Marks more than 70%=3

3/5=0.2

ii-The Marks less than 70%=2

The number of tests conducted=5

2/5=0.2

iii-distinction( more than 75%)=1

Number of tests=5

1/5=0.2

Explanation:

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