A professor reads papers according to a Poisson process with mean 30 minutes per paper. Assume that as soon as the professor finishes reading a paper, the professor starts reading a new paper. The professor is flying home for thanksgiving and estimates that they will have 3 hours of flight time available to read the papers. What is the smallest number of papers that the professor should bring with them, if the professor wishes the probability of running out of papers to read to be less than 0.45?

Design an er diagram for keeping track of information about votes taken in the u.s. house of representatives during the current two-year congressional session. the database needs to keep track of each u.s. state's name (e.g., texas', new york', california') and include the region of the state (whose domain is {northeast', midwest', southeast', southwest', west'}). each congress person in the house of representatives is described by his or her name, plus the district represented, the start date when the congressperson was first elected, and the political party to which he or she belongs (whose domain is {republican', democrat', 'independent', other'}). the database keeps track of each bill (i.e., proposed law), including the bill name, the date of vote on the bill, whether the bill passed or failed (whose domain is {yes', no'}), and the sponsor (the congressperson(s) who sponsored - that is, proposed - the bill). the database also keeps track of how each congressperson voted on each bill (domain of vote attribute is {yes', no', abstain', absent'}). additional information: