# Question: A nursery advertises that it has 10 elm trees for

A nursery advertises that it has 10 elm trees for sale. Unknown to the nursery, 3 of the trees have already been infected with Dutch elm disease and will die within a year.

a. If a buyer purchases two trees, what is the probability that both trees will be healthy?

b. Refer to part a. What is the probability that at least 1 of the trees is infected?

a. If a buyer purchases two trees, what is the probability that both trees will be healthy?

b. Refer to part a. What is the probability that at least 1 of the trees is infected?

## Relevant Questions

Economists at the University of New Mexico modeled the number of casualties (deaths or missing persons) experienced by a deep-draft U.S. flag vessel over a three-year period as a Poisson random variable x. The researchers ...In many cities, neighborhood Crime Watch groups are formed in an attempt to reduce the amount of criminal activity. Suppose one neighborhood that has experienced an average of 10 crimes per year organizes such a group. ...Explain why each of the following is or is not a valid probability distribution for a discrete random variable x: a. b. c. d. Consider the probability distribution for the random variable x shown here: a. Find µ, σ2, and s. b. Graph p(x). c. Locate μ and the interval μ ± 2σ on your graph. What is the probability that x will fall within the ...If x is a binomial random variable, use Table II in Appendix A to find the following probabilities: a. P(x = 2) for n = 10, p = .4 b. P(x ≤ 5) for n = 15, p = .6 c. P(x > 1) for n = 5, p = .1Post your question