1. A problem for people trying to understand the level of gun violence in the United States is that while gunrelated homicides are almost. always reported to or discovered by police, incidents of gun violence that do not result in injury or death often are not. ShotSpotter (http://www.shotspctter.com/) is a gunshot detection system that. detects and conveys the location of gunre or other weapon re using acoustic, optical, and other types of sensors, as well as a combination of such sensors. It. has been adopted by more than 120 jurisdictions in the United States, including in New York City. Economists Jillian Carr and Jennifer Doleac investigated the connect-ion between shots identied by ShotSpotter and resultant reports to police, and found that. 12% of gunre incidents result in a 911 call. Say that. in a particular city on a particular day there are 7 gunre incidents detected by ShotSpotter. Assume that. these can be viewed as a random sample of such incidents. {a} What is the exact probability that exactly three of the incidents result in a 911 call? (b) 1What is the exact probability that at least two of the incidents result in a 911 call? (c) What is the expected number of incidents that result. in a 911 call? What is the standard deviation of the number of incidents that result. in a 911 call? (d) Say there are 500 gunre incidents in a particular city in 2023. What is the probability that fewer than 50 of them result in a 911 call?. An approximate answer is good enough here