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Question: ARSON FOR PROFIT A study of arson for profit was conducted by a team of paid civilian experts and police detectives appointed by the mayor of a large city. It was found that the number of suspicious fires in that city in 2006 was very closely related to the concentration of tenants in the city's public housing and to the level of reinvestment in the area in conventional mortgages by the ten largest banks. In fact, the number of fires was closely approximated by the formula
N(x, y) = (100(1000 + 0.03x2y)1/2)/(5 + 0.2y)2 (0 ≤ x ≤ 150; 5 ≤ y ≤ 35)
Where x denotes the number of persons/census tract and y denotes the level of reinvestment in the area in cents/dollar deposited. Using this formula, estimate the total number of suspicious fires in the districts of the city where the concentration of public housing tenants was 100/census tract and the level of reinvestment was 20 cents/dollar deposited.
Based on the results obtained in (a) above, indicate the measure of central tendency you would like to use for each of the quizzes with reasons.
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Find the mass remaining after 40 days. How long does it take the sample to decay to a mass of 2 mg? Skecth the graph of mass function.
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