Congressional Service The following table gives the number of years of service of senators in the 111th Congress of the United States of America. Find the probability that a randomly selected senator of the 111th Congress served 20–29 years when Congress convened. Source: Roll Call.
Okay, so we want to find the probability of our senator being selected for the 100 on 11. Congress served 20 to 29 years looking at our table. We see it at 20 to 29 years. Has 17 7 senators out of our total, which is 48th. What's 17 plus 27.62 which is 100. So that's 0.7 or 7.17 which is 17%.