|-7+6 | |-7| + 6
|-1| 7+6
1 13
Answer:
Given p = 0.07 as the probability that someone is a universal donor
In case of Geometric Distribution, Probability of getting the first success on nth trial is given by

where p is the probability of success on any one trial and (1-p) shows the probability of failure.
So the probability of the first subject to be a universal blood donor will be the seventh person is

So the final probability is 0.0453
Your answer is going to be the first one: 3^2
Answer:
C. 17,820
Step-by-step explanation:
30,500-12,680= 17,820