The following is the 12:00 class data for "hours worked" for those students who are employed (the zero entries were not included): 25 20 26 25 18 10 18 30 10 38 25 20 30 24 30 12 5 20 25 10 30 30 25 20 23 40 20 13 10 25 20 20 5. Treating this data set as a census of the population defined as "students from the surveyed class who were employed," compute the mean and standard deviation of the "hours employed" data above. Label your results with the correct symbols. 6. Find the z-score for the student who is employed 38 hours per week. Explain what the zscore means relative to the rest of the class. 7. Create a frequency table with 5 classes, starting with the class specified in the table. Create each of your classes so they have the same class width