An archer hits a bulls-eye with a probability of 0.09, and

Chapter 3, Problem 3.1.4

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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.)

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