Assume that the requirements for the Poisson probability distribution are met for Exercises 23–31. Also, when asked to approximate a probability, use the Poisson approximation for the binomial distribution.

Question 6.205

23. Trees per Acre. The mean number of trees per acre (after thinning) in the Lassen National Forest in California was trees.6 Let refer to the number of trees (after thinning) in the Lassen National Forest in California. Find the following probabilities:

  1. Probability that

6.3.23

(a) 0.0399 (b) 0.0360 (c) 0.0395