Question

probability distributions
how many numbers are assigned to event 1?
a range of numbers has been assigned to each event that corresponds to the events probability.
probability distribution
event | probability | cumulative probability | assigned numbers
0 | 0.05 | 0.05 | 01 - 05
1 | 0.15 | 0.20 | 06 - 20
2 | 0.25 | 0.45 | 21 - 45
3 | 0.30 | 0.75 | 46 - 75
4 | 0.20 | 0.95 | 76 - 95
5 | 0.05 | 1.00 | 96 - 100

Explanation:

Step1: Identify Event 1's number range

The range is 06-20.

Step2: Calculate total numbers in range

Subtract start from end, add 1: $20 - 6 + 1 = 15$

Answer:

15