The percentage of marks obtained by a student in monthly unit tests ar

1.	The percentage of marks obtained by a student in monthly unit tests are given below:UNIT TESTIIIIIIIVVPERCENTAGE OF MARK OBTAINED6971736876Find the probability that the student gets (i) More than 70% marks (ii) Less than 70% marks (iii) A distinction
Answer» Total number of unit tests taken = 5 We know, Probability of an event = (Number of Favorable outcomes) / (Total Numbers of outcomes) (i) Number of times student got more than 70% = 3 Probability (Getting more than 70%) = \(\frac{3}{5}\) = 0.6 (ii) Number of times student got less than 70% = 2 Probability (Getting less than 70%) = \(\frac{2}{5}\) = 0.4 (iii) Number of times student got a distinction = 1 [Marks more than 75%] Probability (Getting a distinction) = \(\frac{1}{5}\) = 0.2

The percentage of marks obtained by a student in monthly unit tests are given below:UNIT TESTIIIIIIIVVPERCENTAGE OF MARK OBTAINED6971736876Find the probability that the student gets (i) More than 70% marks (ii) Less than 70% marks (iii) A distinction

Answer»

Total number of unit tests taken = 5

We know, Probability of an event = (Number of Favorable outcomes) / (Total Numbers of outcomes)

(i) Number of times student got more than 70% = 3

Probability (Getting more than 70%)

= \(\frac{3}{5}\)

= 0.6

(ii) Number of times student got less than 70% = 2

Probability (Getting less than 70%)

= \(\frac{2}{5}\)

= 0.4

(iii) Number of times student got a distinction = 1

[Marks more than 75%]

Probability (Getting a distinction)

= \(\frac{1}{5}\)

= 0.2

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The percentage of marks obtained by a student in monthly unit tests are given below:UNIT TESTIIIIIIIVVPERCENTAGE OF MARK OBTAINED6971736876Find the probability that the student gets (i) More than 70% marks (ii) Less than 70% marks (iii) A distinction

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