Question

P(E)+P(`E)=? n WHY (probability 9th)​

Answer 1

Answer:

Step-by-step explanation:

P(E) +P(É) =1

Answer 2

Well the answer is 1

You see

P(E) is the probability that event E occurs

and

P(E') is the probability that event E does not occur.

That collects all possible outcomes in one set.

So, P(E) + P(E') = 1

I'll explain with a example

Suppose you take a fair dice and roll it once

So, possible outcomes are 1,2,3,4,5,6

Let A be the event when 2 comes

Thus,

P(A) is 1/6

and

P(A') is 5/6

P(A)+P(A') = 1/6+5/6 = 1