marks obtained by 30 students if given in the following table: marks: 70,58,70,52,65,75,68 no.of. students: 3,5,4,7,6,2,3. find the probability that a student secure 1. 60 marks 2. 75 marks 3. less than 60 marks
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2.n(s)=30
n(a)=1
p(a)=1÷30
3.n(b)=2
p(a)=2÷30
I think this was correct.
n(a)=1
p(a)=1÷30
3.n(b)=2
p(a)=2÷30
I think this was correct.
anusri1:
for 1 St
I don't know.
it's OK
thank you
i didn't got it
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