A security token, or password generator, is a device that generates random, one-time passwords that are used to log into a secure website. Suppose a particular security token generates an average of 2.672 passwords per hour. Please use this information to answer the following questions. a. What is the probability that exactly 7 passwords will be generated in a 2.5-hour period? Answer: Round to at least FOUR digits after the decimal if necessary. b. How much time (in hours) can be expected to pass between successive password generations? Answer: hours. Round to at least FOUR digits after the decimal if necessary. c. What is the probability that more than 0.389 hours pass between successive password generations? Answer: Round to at least FOUR digits after the decimal if necessary.