Using the accompanying Accounting Professionals data to answer the following questions. a. Find and interpret a 95% confidence interval for the mean years of service. b. Find and interpret a 95% confidence interval for the proportion of employees who have a graduate degree. Click the icon to view the Accounting Professionals data. a. A 95% confidence interval for the mean years of service is (Use ascending order. Round to two decimal places as needed.) \begin{tabular}{|c|c|c|c|} \hline \multicolumn{1}{|c|}{ A } & \multicolumn{1}{c|}{ C } \\ \hline 1 & Employee & Years of ServiGraduate Degree? \\ \hline 2 & 1 & 20N \\ \hline 3 & 2 & 5N \\ \hline 4 & 3 & 10N \\ \hline 5 & 4 & 26Y \\ \hline 6 & 5 & 7Y \\ \hline 7 & 6 & 19Y \\ \hline 8 & 7 & 9N \\ \hline 9 & 8 & 5N \\ \hline 10 & 9 & 9N \\ \hline 11 & 10 & 8Y \\ \hline 12 & 11 & 21N \\ \hline 13 & 12 & 8N \\ \hline 14 & 13 & 23N \\ \hline 15 & 14 & 10N \\ \hline 16 & 15 & 9Y \\ \hline 17 & 16 & 8N \\ \hline 18 & 17 & 31N \\ \hline 19 & 18 & 14Y \\ \hline 20 & 19 & 27N \\ \hline 21 & 20 & 26N \\ \hline \end{tabular}