1) A drilling company executive is interested in determining whether there is a significant difference in U. S. oil-drilling activity from one year to the next. He has data for rig activity for Sept. 1988 and 1989 gathered from seven states, as shown. Sate Sept. 1988 Sept. 1989 Texas 297 295 Oklahoma 134 136 Louisiana 134 136 California 52 52 Kansas 40 38 Wyoming 57 51 New Mexico 31 28 Determine if there is a significant difference between the two years using a = 0.01