12.2 Identifying Good System Administrators. A management consultant is studying the roles played by experience and training in a system administrator's ability to complete a set of tasks in a specified amount of time. In particular, she is interested in discriminating between administrators who are able to complete given tasks within a specific time and those who are not Data are collected on the performance of 75 randomly selected administrators. They are stored in the file System Administrator xls Using these data, the consultant performs a discriminant analysis. The variable Experience measures months of full-time system administrator experience, while Training measures the number of relevant training credits. The dependent variable Completed is either Yes or no, according to whether or not the administrator completed the tasks Create a scatter plot of Experience versus Training using color or symbol to differentiate administrators who completed the tasks from those who did not compete them. See if you can identify a line that separates the two classes with a minimum misclassification, Creat a scatterplot here 2 a 06 Classic Car Actual Preds Ver To in the blanks Answer the question 12.2b. Na Variables Classification Function Yes No Constant Experience Training Classification scores Yes 0.00 4 0.00 6 0.00 Experience Training No 0.00 0.00 0.00 Answer the question 12.20 0 How much experience must be accumulated by an administrator with 4 training credits before his or her estimated probability of completing the tasks exceed 50%? Answer the gestion 12.ad. e Compare the clasification accuracy of this model to that resulting from a loptic regression with cutofo.5 COM Auch Cime Y No 0 in the blanks Answer the question 12.20 Compute the correlation between bperience and Training for administrators that completed the tasks and compare it to the correlation of administrators who did not complete the tasks. Does the equal correlation assumption seem renible? Answer the westion 12.24