An archer hits a bulls-eye with a probability of 0.09, and
Chapter 3, Problem 3.1.4(choose chapter or problem)
An archer hits a bulls-eye with a probability of 0.09, and the results of different attempts can be taken to be independent of each other. If the archer shoots nine arrows, calculate the probability that:(a) Exactly two arrows score bulls-eyes. (b) At least two arrows score bulls-eyes. What is the expected number of bulls-eyes scored? (This problem is continued in 3.2.5 and 3.5.3.)
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer