Question

the following is the the distribution of marks of 50 students in a certain class test.
Marks = 10 20 30 40 50 60 70
Number of students=3 9 6 10 7 6 9
find the probability that a student scores
(i)more than 30 marks and
(ii) less than 40 marks




Please agar aata hai tabhi answer karna or jaldi ​

Answer 1

Answer:

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Answer 2

Answer:

total no of students 50

no of students scoring 30 or more than 30 marks=6+10+7+6+9=38

p(x)=38/50=19/25