Question

if the probability of a airplane flight arrives on time is 0.75 find the probability that out of 3 flights ALL arrive on time? and out of 3 flights at least one of them arrives on time?

Answer 1

`P(\text{all}-3)=0.42`

Step-by-step explanation

We want to find the probability that all 3 flights will arrive on time.

To do that, we have to find the product of the probability that each plane will arrive on time three times.

That is:

`\begin{gathered} P(\text{all}-3)=0.75\cdot0.75\cdot0.75 \\ P(\text{all}-3)=0.42 \end{gathered}`

That is the answer.