Kindly answer the given below question with an explanation

The frequency distribution representing the number of frequent flier miles accumulated by employees at Brumley Statistical Consulting Inc. is given below. Frequent Flier Miles (000) O up to 4 4 up to 8 8 up to 12 12 up to 10 16 up to 20 Total Number of Employees 4 11 24 9 3 51 a. How many employees accumulated less than 12,000 miles? Number of employees b. Convert the frequency distribution to a cumulative frequency distribution. CF Miles Less than 4 Less than 8 Less than 12 Less than 16 Less than 20