Integrated Pest Management (IPM) adopters apply significantly less insecticides and fungicides than non-adaptors among grape producers. A paper in 2008 contained the following adoption rates for six states. Is there evidence to say that the proportion of IPM adopters is greater in some states than others? Use = 0.05.

State 55 24 IPM Adopted IPM Not Adopted Total Cal. Mich. New York Oregon Penn. Wash. Total 39 19 22 30 189 92 69 114 88 83 77 523 131 124 133 110 107 107 712