QUESTIONS 6-10. Data in the table below were collected in a case control study of breast cancer and regular intake of nonsteroidal anti-inflammatory drugs (NSAIDS) among women in the United States for five years or more. Answer questions 6-10 based on these data. Status Cases Control Regular Intake of NSAIDs 200 300 No Regular Use of 300 200 NSAIDS 10. What is the correct interpretation of this result? O A. Regular NSAID intake significantly increases breast cancer risk. O C. Regular NSAID intake does not change breast cancer risk. O B. Regular NSAID intake significantly decreases breast cancer risk. O D. Regular NSAID intake should be recommended for breast cancer prevention.

Urban Travel Times Population of cities and driving times are related, as shown in the accompanying table, which shows the 1960 population N, in thousands, for several cities, together with the average time T, in minutes, sent by residents driving to work. City Population N Driving time T Los Angeles 6489 16.8 Pittsburgh 1804 12.6 Washington 1808 14.3 Hutchinson 38 6.1 Nashville 347 10.8 Tallahassee 48 7.3 An analysis of these data, along with data from 17 other cities in the United States and Canada, led to a power model of average driving time as a function of population. a Construct a power model of driving time in minutes as a function of population measured in thousands b Is average driving time in Pittsburgh more or less than would be expected from its population? c If you wish to move to a smaller city to reduce your average driving time to work by 25, how much smaller should the city be?