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Remaining Time: 0134:51 A scatterpot of Y vs X. The scatterplot displays the points: (10,85), (10,86),.(11,86, (11,87. 1,88), (12,82),.(12,83),(12,88), (12.89), (13.88) . (13,90), (13,91). (14.84), (14,91). (15, 85), (15,87), (15,92), (15,93), (15,94), (16,89), (16,93),(16,95), (17.94) (17,96), (17,97) ation coeficient for the scatterplot above is r - 0.71. We realize that the point (18, 78) was accidentaly onitted rom the data set. We add this point to the data and recalculate r How does the value of r change? (i) The correlation coefficient would increase to a value higher than r-0.71 (ii) The correlation coefficient would remain the same (r-0.71) 0 (ii) The correlation coefficient would decrease to a value lower than r 0.71 O When a disease outbreak begins, it often spreads rapidly An exponential model is often the best fit for the number of people with the disease after some period of time. AIDS deaths in the United States grew rapidly from 1980 to 1990. The graph below shows the exponential model for the number of AIDS deaths in each of the years in that time period AIDS Doaths from 1980 to 1990 140000F 100000 80000 -t…- 10 Years from 1980 (1980 Year 0) Use the graph to approximate the time that the number of AIDS deaths first exceeded 20, 000 O() Between 1980 and 1981 O (i) Between 1982 and 1983 (iii) Between 1985 and 1986 O (iv) Between 1988 and 1989 Submit AssignmentQuit & Save Back | | Question Menu▲ Next Carnes athpathways.ma adeba Remaining Time: 01:33.36 Cellular phone usage increased in the United States from 1985 to 2010. There were 340, 213 cellular subscibers in the United States in 1985. By 2010, the number of cellular subscribers in the U.S. reached9 300, 520, 098. The cellular subscribers in the U.S in those years can be modeled by the equatiorn: predicted cellular subscribers (in thousands) 340 (1.571)years since 1985 Based on this model, what is the predicted number of cellular phone subscribers in 1993? (0 4273 O (0) 12, 725 O (i) 4, 273, 073 O (iv) 12, 615, 033

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Ans D The (orrelatiom coefficiet would 2 Between 1ggs a and 19 & G L4 2 73 O7 3