Question

Suppose a bus arrives at a bus stop every 30 minutes. If you arrive at the bus stop at a random time what is the probability that you will have to wait at least 5 min for the bus? A. 1/6

B.1/5
C.2/3
D.5/6

Answer 1

D. 5/6

I just took it, it's correct.

Answer 2

Option A is correct.

Explanation:

We are given with Total waiting time of a bus = 30 minutes

also given that we arrive at bus stand and have to wait for 5 minutes.

`Probability=(Number\:of\:favorable\:outcome)/(Number\:of\:Total\:Outcome)`

So,
`Probability=(5)/(30)=(1)/(5)`

Therefore, Option A is correct