Check my work 7 The Quick Change Oil Company has a number of outlets. The numbers of oil changes at the Oak Street outlet in the past 20 days are as follows 61 61 81 73 79 40 52 78 68 58 49 48 69 83 76 65 71 72 70 64 The data are to be organized into a frequency distribution using 5 classes b. What class interval would you suggest? (Round the final answer to the nearest whole number.) Book 8 erences c. What lower limit would you recommend for the first class? 40 d. Organize the information into a frequency distribution and determine the relative frequency distribution. (Round the final answers to 2 decimal places.) Relative Units Frequency frequency 40 to under 48 4 to under 58 58 to under 67 67 to under 76 76 to under 85 Total e. Comment on the shape of the distribution. (Enter the intervals in ascending order.) The greatest concentration is in classes up to and[ up to