1.The notion of sustainability is used differently in economics than in the natural sciences. Explain the meaning of sustainability in these two frameworks, and discuss the attempts that have been made by economists to make the concept operational.

2. Would the extension of territorial limits for fishing beyond 200 miles from coastlines offer the prospect of significant improvements in the efficiency of commercial fishing

1.The notion of sustainability is used differently in economics than in the natural sciences. Explain the meaning of sustainability in these two frameworks, and discuss the attempts that have been made by economists to make the concept operational.

2. Would the extension of territorial limits for fishing beyond 200 miles from coastlines offer the prospect of significant improvements in the efficiency of commercial fishing

The cost per seat-mile on a major U.S. airline is 24.1 cents. In order to estimate the cost of flying a passenger from Pensacola, FL, to Denver, CO, we should multiply 1,184 miles by 24.1 cents.

Do you agree or disagree? Explain your reasoning.

What would you suggest to estimate the cost of a flight?

The Problem involves building a 12 – foot diameter sewer at a bottom depth of 40 feet in loose sand with a water table at a depth of 8 feet. The alignment is along city streets. The project needs to be completed in 800 days. Determine the amount and types of equipment you feel should be used on this project. The sewer is ten miles in length.

Using R Studio/R programming...

A consumer-reports group is testing whether a gasoline additive changes a car's gas mileage. A test of seven cars finds an average improvement of 0.4 miles per gallon with a standard deviation of 3.57. Is the difference significantly greater than 0? Assume that the values are normally distributed.

What would the code be?

The Carbondale Hospital is considering the purchase of ambulance. The TheXarbondale Hospital is considering the purchase of ambulance. The decision will rest partly on the anticipated mileage" be driven next year. The miles driven during the past 5
years are as follows:

a) Forecast the mileage for next year using a 2-year moving average.
b) Find the MAD based on the 2-year moving average forecast in part (a), (Hint: You will have only 3 years of matched data.)
c) Use a weighted 2-year moving average with weights of .4 and .6 to forecast next year's mileage. (The weight of .6 is for the most recent year.) What MAD results from using this approach to forecasting? (Hint: You will have only 3 years of matched data.)
d) Compute the forecast for year 6 using exponential smoothing, an initial forecast for year 1 of 3,000 miles, and a = .5.

*****PLEASE SHOW WORK

Round your answers to one decimal place.

1. What is the point estimate of the difference between the mean number of miles that Buffalo residents travel per day and the mean number of miles that Boston residents travel per day?

2. What is the 95% confidence interval for the difference between the two population means?

1. police car is traveling south towards the intersection that a robber’s car has just crossed traveling east. The robber’s car is currently traveling 55 mph. The police car’s speed is currently 63 mph. How is the distance between the cars changing when the cop is 1.2 miles from the intersection, and the robber is .5 miles from it? Be sure to answer in a complete sentence.

2. In calm water, an oil spill spreads out in a circular fashion. Suppose the radius, r, of the spill is increasing by 3 feet per minute. How fast is the area, A, of the spill growing when the radius is 10 feet? Be sure to answer in a complete sentence.

3. We want to construct a box whose base is length is 5 times the width.  The material used to build the top and bottom cost $9 per sq. ft. and the material used to build the sides cost $7 per sq. ft.  If the box must have a volume of 75 cu. ft., determine the dimensions that will minimize the cost to build the box.

Use Best Response Curve and Isocost Curve = Labor Discipline Model to analyze “game” between trucking companies and drivers.

Background: In the past drivers made by mileage between pick up and delivery points which gave drivers and incentive to maximize mileage, (i.e., drive from NYC to LA in two days in spite of safety rules limiting hours driven per day). Drivers previously recorded fake driving time data to show DOT, but now DOT requires Electronic Logging which operates while a truck is running and records miles and time. Electronic logging will reduce opportunity for drivers to maximize miles/income. Also, most drivers view time on the road away from home as work time. Trucking companies must bid against drivers opportunity costs of working elsewhere when unemployment is low.  

Use the labor discipline model to show the effect on trucking companies of low unemployment and a tight market for workers in other industries.

The table shows a short excerpt from the "car weight and mileage" data file on the text CD. That file lists several 2004 model cars with automatic transmission and their x = weight (in pounds) and y = mileage (miles per gallon of gas). The scatterplot is roughly linear and r = -0.74. The regression equation is  = 47.140 - 0.0051x.

(a) Find the predicted mileage and residual for a Hummer H2.

(b) Use this information in a sentence.
The Hummer gets miles/gallon  ---Select--- (fewer) (more) than one would predict.
(c)  % (Enter a number between 0 and 100; 2 decimal places) of the variability in  ---Select--- (Mileage) (Weight) can be explained by  ---Select--- (Mileage) (Weight)