10.14 Random samples of 100 insurance company executives, 100 transportation company executives, and 100 media company executives were classified according to highest level of formal education using the code 10¼ some college, 20¼bachelor’s degree, 30¼master’s degree, 40¼more than master’s. The results are shown below. Determine whether median education level is the same for the three groups at a¼0.05.

Education Insurance Transportation Media 10 19 31 33 20 20 37 34 30 36 20 21 40 25 12 12 Total 100 100 100