(Solved): The Joint Strike Fighter (JSF) program, operated by the U.S. Department of Defense, is a global def ...

The Joint Strike Fighter (JSF) program, operated by the U.S. Department of Defense, is a global defense program that involves acquisition of military fighter jets for participating allied countries. An article in the Air \& Space Power Journal (March-April 2014) reported on the estimated annual cost of adding a military aircraft to the JSF program. The accompanying table lists the year of initial operation and cost (in millions of dollars) for \( 10 \mathrm{JSF} \) military aircraft models. For this problem, let \( y= \) estimated annual cost and \( x= \) year of initial operation for each aircraft model. Complete parts a through \( \mathbf{c} \) below. Click the icon to view the table. \[ \hat{y}=-3725.7+(\quad) x \] (Round to one decimal place as needed.) b. If possible, give a practical interpretation of the \( y \)-intercept of the line. Select the correct choice below and, if necessary, fill in the answer box within your choice. A. The intercept is the estinnuted cost for a program with an initial year of operation of (Round to one decimal place as needed.) B. The intercept is the estimated initial year of operation for a program with a cost of (Round to one decimal place as needed.) C. There is no practical interpretation because 0 is outside the range of values for the initial year of operation. D. There is no practical interpretation because 0 is outside the range of values for the cost. c. Give an estimate of the increase in the cost of adding a military aircraft to the JSF program each year. (Hint: Practically interpret the slope of the line.) The estimated increase in the cost of adding one military aircraft model to the JSF program is \$ million per year. (Round to one decimal place as needed.) Cost of JSF programs ct the correct choice below and, if f operation of vith a cost of values for the initial year of operation. values for the cost.