Question

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Answer 1

Answer:

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Step-by-step explanation:

Given Mark scored 20, 25, 28,29, 33,38 ,42, 43 and number of students 6,20,24 ,28,15,4 2, and 1. a )find the probability of the students getting more than 40 marks .b)find the probability of the students getting less than 30 marks

Marks scored : 20 25 28 29 33 38 42 43

Number of students : 6 20 24 28 15 4 2 1

Now total number of students = 6 + 20 + 24 + 28 + 15 + 4 + 2 + 1 = 100

Probability of number of students getting more than 40 marks will be 2+1=3 / 100

Probability of number of students getting less than 30 marks will be 28 + 24 + 20 + 6 = 78 / 100

= 39 / 50