You want to forecast the cost of traveling on a commercial airplane. Some of the variables that contribute are the type of plane, distance traveled, number of passengers, amount of luggage, etc. A study is conducted only on the type of Boeing 737 aircraft that flies 500 miles on comparable routes during the same season of the year. Can the number of passengers forecast the cost of flight on those routes? Flights 1 2 3 4 5 6 7 9 10 11 12 Number of 61 63 67 69 70 74 76 81 86 91 95 97 passengers Cost 4280 4080 4420 4170 4480 4300 4820 4700 5110 5130 5640 5560 (thousands S A) The independent variable is: B) The dependent variable is: C) Is there a relationship between the variables number of passengers and cost? What kind of relationship is it? D) The regression equation is: E) Interpret the estimated parameters F) By what percentage is the number of passengers explained by the cost? G) Is the estimated model useful for making future forecasts? (Ctrl)