A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 respondents, 14% chose chocolate pie, and the margin of error was given as + or - 5 percentage points. What values do p, q, n, E, and p represent(The sample proportion, found from evaluating 1-p, the sample size, margin of error, and population of proportion)? If the confidence level is 99%, what is the value of a?