A director of a county highway department wants to analyze how a cost of resurfacing project depends on the road miles to be resurfaced based on the following data from five recent projects. The cost (in 1000) and mileage (in miles) for each project are given as follows:
Project 1: Cost =6, Mileage = 13
Project 2: Cost = 14, Mileage = 4
Project 3: Cost =10, Mileage = 5
Project 4: Cost = 14, Mileage = 7
Project 5: Cost =26, Mileage = ?
Based on this data, answer the following questions by doing your own calculations without using minitab.
1) Calculate the average cost per mile for the five projects.
2) Calculate the average mileage for the five projects.
3) Calculate the total cost for resurfacing all the miles in the five projects.
4) Calculate the cost per mile for the project with the highest mileage.