Question

Year	Number of Alternative-Fueled Vehicles in US
2000	394,664
2001	425,457
2002	471,098
2003	533,999
2004	565,492
2005	592,125
2006	634,562
2007	695,766

1. Do the variables have significant correlation? For full credit, you must show each step of the hypothesis test. Use the 0.05 significance.

2. In 2008, the price of gas dropped drastically and hit a low average of $1.59 for the nation. What effect do you think this will have on the alternative-fuel car sales, if any? Do you think that this would affect the number of alternative-fueled vehicles used in the United States? Do you think that it would follow the same pattern as before 2008? Write 2 or 3 sentences explaining how you think the new vehicles will affect the number of alternative-fueled vehicles in the United States.

3. Use your regression equation to predict the number of alternative-fueled vehicles used in the United States in 2010. Assume that the pattern remains the same after the introduction of the electric-gas vehicles. Show your work.

4. Search online to find some evidence for or against your opinion in part e. Give the information that you found and state the URL to the data. Was your prediction correct or incorrect? Why do you think that happened? Write 2 or 3 sentences summarizing the information that you found and explain why you think that happened. Be sure to answer each question.

Answer 1

Only question 1 - solved in complete detail

1. Do the variables have significant correlation? For full credit, you must show each step of the hypothesis test. Use the 0.05 significance.

Part 1 - Find the correlation

Part 2 - Test it significance.