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IF r.v X : waiting time in minutes ...

IF r.v X : waiting time in minutes for bus and p.d.f of X is given by
` f(x) ={{:((1)/(5),0 le x le 5),(0,"otherwise ,"):}`
then probabaility of waiting time not more than 4 minutes is

A

0.3

B

0.8

C

0.2

D

0.5

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The correct Answer is:
B
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