The percentages of marks obtained by a student in six unit tests are given below-Unit test I II III IV V VI Percentage of marks 53 72 28 46 67 59 If a test is selected at random then- the probability that the student gets more than 60 - marks in the test is

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The percentages of marks obtained by a student in six unit tests are given below:

If a test is selected at random then, the probability that the student gets more than 60% marks in the test is

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Unit test	I	II	III	IV	V	VI
Percentage of marks obtained	53	72	28	46	67	59

The percentage of marks obtained by a student in monthly unit tests are given below:

$\begin{matrix} unit test & I & I I & I I I & I V & V Percentage of marks obtained & 69 & 71 & 73 & 68 & 76 \end{matrix}$

Find the probability that the student gets:

(i) more than 70% marks (ii) less than 70% marks (iii) a distinction.

Marks	0−20	20−40	40−60	60−80	80−100
No. of students	8	15	32	26	9

Test	$I$	$I I$	$I I I$	$I V$	$V$
Percentage marks obtained	$69$	$71$	$73$	$69$	$74$

70 %

Unit test	I	II	III	IV	V
% of marks	70	72	65	68	86

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