Researchers are interested in investigating the relationship between socio-economic class and educational level in city A. They used a survey to collect data on 390 randomly selected residents and summarized the distribution of socio-economic class by educational level in the table below: Education Economic Less than Status or High Bachelor's Master's Total degree degree or school higher Observed 16 17 14 47 Upper Expected 21.93 14.22 10.85 47 Class Chi2 Component 1.6 0.54 Missing (B) Observed 15 18 15 48 Upper Middle Expected 22.4 14.52 11.08 18 Class Chi2- Component 2.44 0.83 1.39 4.66 Observed 33 29 22 84 Lower Middle Expected 39.2 25.42 19.38 34 Class Chi2- Component 0.98 0.5 0.35 1.83 Observed 57 28 21 106 Working Expected 49.47 32.07 24.46 106 Class Chi2- Component 1.15 0.52 0.49 2.16 Observed 61 26 18 Working Expected Missing 31.77 24.23 Poor (A) Chi2- Component 2.94 1.05 1.6 5.59 Total Observed 182 118 90 390 Answer the following questions by choosing the correct