Ash, Kim and Josh meet every Wednesday to go for a run. If they all agree, they go for a long run rather than a short run. Based on previous experience, the probability that Ash is up for a long run is 0.4, Kim 0.3 and Josh 0.7.

Question

What is the probability that they are all up for a long run the next time they meet. State any important assumptions that you make in order to calculate this probability.

Do I just need to multiply the three probabilities together? And what would important assumptions be?

Thanks

Answer 1

Yes, multiply

1. it is not blowing 60 knots and snowing
2. Josh does not change his mind because Kim decides yes.
3. They all show up