The data has been arranged in tabular form and is attached below as an image.
We are to find the probability that a randomly selected firm will have between 5 and 99 employees. The probability that a randomly selected firm will have between 5 and 99 employees is the sum of probabilities that the number of employees of firm are 5 - 9 , 10 -19 and 20 - 99.
So,
The probability that a randomly selected firm will have between 5 and 99 employees = 17.7% + 10.8% + 8.9% = 37.4% = 0.374
Thus the probability that the a randomly selected firm will have between 5 and 99 employees is 37.4% or 0.374.