Thirty-nine counties from the sixstate upper Midwest area of the United States were randomly selected from the USDA-NASS website and the following data on oat-production yield per acre were obtained.

a. Do these data show a significant difference in the mean yield rates for the six states? Use a = 0.05.
b. Draw a graph that demonstrates the results found in part a.
c. Explain the meaning of the results, including an explanation of how the graph portrays the results.

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Cou ND NE IA 76.2 53.0 71.4 60.0 76.5 52.0 65.3 70.0 64.37.0 50.0 53.0 86.0 71.0 67 53.0 2.0 72.0 73.6 54.0 61.4 50.0 2.5 81.0 61.3 64.0 66.0 56.0 55.757.0 74.3 40.0 58.0 59. 64.0 58.3 59.3 56.0 61.4 MN SD WI 4 7