If A denotes some event, what does Upper A overbar denote? If P(A)equals0.999, what is the value of P(Upper A overbar)? What does Upper A overbar denote? A. Event Upper A overbar denotes the complement of event A, meaning that Upper A overbar and A share some but not all outcomes.

Step-by-step explanation:

Given that A denotes some event .

And also given that P(A)=0.999

Here the event denotes the complement of event A Therefore contains all the events that does not occur in A.

We know that the total probability is 1

So we have that

Hence the complement of event A is