All the procedures should be done with 5% P-value or 95%confidence interval.Some answers are approximated, choose the mostappropriate answer. Open Pollution data. SETUP: Since wind clearsthe air, some people believe that the cities with wind speed above10 have less SO2 than the cities with wind speed below 10. Giventhe data your job is to decide if this is a reasonable expectation.I. What test/procedure did you perform? (6.66 points) a. One sidedT-test b. Two sided T-test c. Regression d. Confidence interval II.Statistical interpretation? (6.66 points) a. Since P-value is smallwe are confident that the slope is not zero. b. Since P-value issmall we are confident that the averages are different. c. SinceP-value is too large the test is inconclusive. d. None of these.III. Conclusion? (6.66 points) a. Yes, this is a reasonableexpectation. b. No, we cannot confirm that this is a reasonableexpectation.
| CITY | SO2 | WIND |
| Phoenix | 11 | 6 |
| Charleston | 40 | 6.5 |
| Cincinnati | 27 | 7.1 |
| Richmond | 38 | 7.6 |
| Nashville | 23 | 7.9 |
| Little Rock | 15 | 8.2 |
| Louisville | 35 | 8.3 |
| New Orleans | 9 | 8.4 |
| Columbus | 27 | 8.6 |
| San Francisco | 16 | 8.7 |
| Salt Lake City | 28 | 8.7 |
| Jacksonville | 18 | 8.8 |
| Albany | 56 | 8.8 |
| Albuquerque | 15 | 8.9 |
| Denver | 24 | 9 |
| Hartford | 82 | 9 |
| Wilmington | 43 | 9 |
| Miami | 14 | 9 |
| Atlanta | 32 | 9.1 |
| Memphis | 10 | 9.2 |
| Washington | 30 | 9.3 |
| Pittsburgh | 63 | 9.4 |
| Seattle | 40 | 9.4 |
| St. Louis | 61 | 9.5 |
| Baltimore | 47 | 9.6 |
| Philadelphia | 79 | 9.6 |
| Indianapolis | 40 | 9.7 |
| Kansas City | 18 | 10 |
| Detroit | 46 | 10.1 |
| Chicago | 131 | 10.4 |
| Minneapolis-St. Paul | 42 | 10.6 |
| Providence | 136 | 10.6 |
| Norfolk | 38 | 10.6 |
| Houston | 10 | 10.8 |
| Omaha | 17 | 10.9 |
| Cleveland | 80 | 10.9 |
| Dallas | 11 | 10.9 |
| Des Moines | 20 | 11.2 |
| Milwaukee | 20 | 11.8 |
| Buffalo | 11 | 12.4 |
| Wichita | 10 | 12.7 |
