Car Emissions: Listed below are measured amounts of greenhouse gas emissions from cars in three different categories. The measurements are in tons per year, expressed as CO2 equivalents. Use a 0.05 significance level to test the claim that the different car categories have the same mean amount of greenhouse gas emissions.

4-CYLINDER - 7.2, 7.9, 6.8, 7.4, 6.5, 6.6, 6.7, 6.5, 6.5, 7.1, 6.7, 5.5, 7.3

6-CYLINDER - 8.7, 7.7, 7.7, 8.7, 8.2, 9.0, 9.3, 7.4, 7.0, 7.2, 7.2, 8.2

8-CYLINDER - 9.3, 9.3, 9.3, 8.6, 8.7, 9.3, 9.3

Final conclusion in words of the problem:

Based on the results, does the number of cylinders appear to affect the amount of greenhouse gas emissions?