Use a computer or statistical calculator to calculate the correlation coefficient in parts a through c below. a. The table shows the approximate distance between selected cities and the approximate cost of flights between those cities. Calculate the correlation coefficient between cost and miles. r= 0.991 (Round to three decimal places as needed.) Cost Miles 184 967 404 3086 275 1998 93 432 434 3002 b. This table shows the same information, except that the distance was converted to kilometers by multiplying the numbers of miles by 1.609 and rounding to the nearest kilometer. What happens to the correlation coefficient when numbers are multiplied by a positive constant? Cost Kilometers 184 1556 404 4965 (Round to three decimal places as needed.) 275 3215 93 695 434 4830 OA. The correlation is The correlation coefficient increases when the numbers are multiplied by a positive constant. B. The correlation is 0.991. The correlation coefficient remains the same when the numbers are multiplied by a positive constant. OC. The correlation is The correlation coefficient decreases when the numbers are multiplied by a positive constant. c. Suppose a tax is added to each flight. Forty-five dollars is added to every flight, no matter how long it is. The table shows the new data. What happens to the correlation coefficient when a constant is added to each number? (Round to three decimal places as needed.) A. The correlation is OB. The correlation is OC. The correlation is The correlation coefficient decreases when a constant is added to each number. The correlation coefficient increases when a constant is added to each number. The correlation coefficient remains the same when a constant is added to each number. Cost Miles D 229 967 449 3086 320 1998 138 432 479 3002