4. (11 pts) The following frequency distribution presents the height, in inches, of a sample of 25 NBA basketball players. Height Frequency 72.0- 73.9 74.0 - 75.9 76.0- 77.9 4 78.0 - 79.9 80.0 - 81.9 82.0 - 83.9 84.0 - 85.9 a. How many classes are there? Use a sentence to briefly explain how you got your answer. b. What is the class width? Show work or use a sentence to briefly explain how you got your answer. C. What percentage of the players are at least 80.0 inches tall? Show work or use a sentence to briefly explain how you got your answer. If needed, round your answer to the nearest 10th of a percent. d. What percentage of the players are less than 78.0 inches tall? Show work or use a sentence to briefly explain how you got your answer. If needed, round your answer to the nearest 10th of a percent