Answer: When studying the spread of an epidemic, we assume that the probability that an
Chapter 15, Problem 33(choose chapter or problem)
When studying the spread of an epidemic, we assume that the probability that an infected individual will spread the disease to an uninfected individual is a function of the distance between them. Consider a circular city of radius 10 miles in which the population is uniformly distributed. For an uninfected individual at a fixed point , assume that the probability function is given by where denotes the distance between points and . (a) Suppose the exposure of a person to the disease is the sum of the probabilities of catching the disease from all members of the population. Assume that the infected people are uniformly distributed throughout the city, with infected individuals per square mile. Find a double integral that represents the exposure of a person residing at . (b) Evaluate the integral for the case in which is the center of the city and for the case in which is located on the edge of the city. Where would you prefer to live?
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