Externalizers and Internalizers are two categories of personality types in a personality theory by Rotter. A large group of people at a PTA meeting were given a brief personality test and then classified as lower, middle, or upper class. Test the data below with a c² Identify the problem as one of independence or goodness of fit. Interpret the c² value you find.

Lower Middle Upper

Internalizers 8 36 12

Externalizers 18 21 2