12. Biomass Power Plants. Power plants around the country are retooling in order to consume biomass instead of or in addition to coal. The following table contains a random sample of 10 such power plants and the amount of biomass they consumed in 2006, in trillions of BTU (British thermal units).23 Test whether the population standard deviation is greater than 2 trillion BTU using level of significance .
| Power plant | Location | Biomass consumed (trillions of BTU) |
|---|---|---|
| Georgia Pacific Naheola Mill |
Choctaw, AL | 13.4 |
| Jefferson Smurfit Fernandina Beach |
Nassau, FL | 12.9 |
| International Paper Augusta Mill |
Richmond, GA | 17.8 |
| Gaylord Container Bogalusa |
Washington, LA | 15.1 |
| Escanaba Paper Company |
Delta, MI | 19.5 |
| Weyerhaeuser Plymouth NC |
Martin, NC | 18.6 |
| International Paper | Georgetown, SC | 13.8 |
| Bowater Newsprint | McMinn, TN | 10.6 |
| Covington Facility | Covington, VA | 12.7 |
| Mosinee Paper | Marathon, WI | 17.6 |