STAT 2670 Worksheet 1-1 11 Summer 2023 Friday, 6/03/2023 Page 1 of Name: melody Walter Answer all questions and show all of your work 1. The frequency distribution below summarizes employee years of service for Alpha Cor- poration. Answer for each question. Years of Service Frequency 6-10 11-15 16-20 21-25 20-30 (a) Build the cumulative frequency table. (b) What is the class width? (c) Identify the lower limits. (d) Find the relative frequency for the class 11-15. 2. The table is a frequency histogram for scores. Answer for each question. Frequency N 0 - 2 5 Score (a) What is the total number of data. (b) Find the relative frequency of score 4. (c) What is the proportion of scores at least 2 and less than 5. (d) How can you describe about the symmetry of the data? Choose one among bell- shaped, skewed to the right, skewed to the left, or uniform