Math-Probability?

Question

In the U.K. in a recent year, potentially dangerous commercial aircraft incidents (e.g., near collisions) averaged 1.2 per 100,000 flying hours. Let X be the number of incidents in a 100,000-hour period.

(b)
What is the probability of at least one incident? (Round your answer to 4 decimal places.)
(c)
More than three incidents? (Round your answer to 4 decimal places.)

Answer 1

You're most likely going to look up these answers in a z-score table, particularly since they talk about four decimal places. It would seem that you're missing information, though. Do you have a standard deviation or other information that would give more specific data?