A study was conducted to see if economic class was associated with the highest completed level of education. According to the study, 155 of 500 lower class adults obtained a bachelor’s degree or higher. This compares to 167 of 450 middle class adults who obtained a bachelor’s degree or higher. Assuming that the highest completed level of education does not depend on economic class, the probability of the data being the result of chance is calculated to be 0.05. Interpret this calculation.