A regional director responsiablr for business development in the state of Pennsylvania is concerned about the number of small business failures. If the mean number of small business failures per month is 6, what is the probabiliity that exactly 4 small businesses will fail during a given month? Assume that the probability of a failure is the same for any two months and that the occurence or nonoccurence if a failure in any month is independent of failures in any other month. If required, round your answer to four decimal places.