Students were asked to evaluate the ease of use of specific GAFE features and functions (see Table 6 and Figure 5). The question employed a 4-point Likert scale using values of Very easy (4), Somewhat easy (3), Somewhat difficult (2), and Very difficult (1). The relatively low 95% confidence interval (no greater than ±0.19) of the means suggested students found easy to use specific GAFE features, while the calculated 95% confidence interval suggested that at least 75% of the population represented by the sample would find the GAFE tasks easy to learn, remember, and understand (see Table 6).