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If a random variable waiting time in min...

If a random variable waiting time in minutes for bus and probability density function of x is given by
`f(x)={{:(1/5","0lexle5),(0",""otherwise"):}`
Then probability of waiting time not more than 4 minutes is equal to

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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