All work must be clearly shown for credit. 1 . You plan to conduct a survey of the students who attend your college. Describe the procedure you would use for obtaining a sample of each type: (4 pts) a) Random b) Systematic c) Convenience d) Stratifi ed 2. The data shows the employment information for the Alpha Corporation. (4 pts) a) What is the class width? b ) What are the class midpoints? c) What are the class boundaries? d) Find the mean, median and standard deviation for the frequency distribution. Years of Service Frequency 1-5 2 6-10 11 11-15 19 16-20 25 21-25 26-30