stats Q3

A company produces optical-fiber cable with a mean of 0.4 flaws per 100 feet. What is the probability that there will be exactly 2 flaws in 1300 feet of cable? Round your answer to four decimal places.

0.0746

Lindsay is checking out books at the library, and she is primarily interested in mysteries and nonfiction. She has narrowed her selections down to nine mysteries and six nonfiction books. If she randomly chooses three books from her selections, what's the probability that they will all be mysteries? Enter a fraction or round your answer to 4 decimal places, if necessary.

0.1846

A real estate agent has 14 properties that she shows. She feels that there is a 50% chance of selling any one property during a week. The chance of selling any one property is independent of selling another property. Compute the probability of selling at least 2 properties in one week. Round your answer to four decimal places.

0.9991