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3) A professor's son, having made the wise decision to drop out of college, has been finding his way in life taking one job or another, leaving when his creativity

is overly stifled or the employer tires of his creativity. The professor dutifully logs the duration of his son's last few careers and has determined that the average duration is normally distributed with a mean of sixty-six weeks and a standard deviation of ten weeks. The next career begins on Monday; what is the likelihood that it endures for less than a year and a half? (6) Patrick Bateman is considering four alternatives Friday night. The payoff for each opportunity will depend on economic and other conditions, and are represented in the payoff table below.

Fig: 1

Fig: 2

Fig: 3