Question

if P(E)=0.65 then find the probaility of 'not E'

Answer 1

Heya..

Since Probability of certain event is 0 or 0-1 or 1...nothimg else.

According to Probability concept,

=) P(event) + P'(event) = 1

=) P(E) + P not(E) = 1

=) 0.65 + P not (E) = 1

=) P not(E) = 1 - 0.65

=) P not(E) = 0.35

Hope it's helpful to u.

Answer 2

If P(E) = 0.65 then the probability of 'not E' is 0.35

Given : P(E) = 0.65

To find : The probability of 'not E'

Solution :

Step 1 of 2 :

Write down the given expression

Here it is given that P(E) = 0.65

Step 2 of 2 :

Find probability of 'not E'

probability of 'not E' is denoted by P(E')

We know that for any event E

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

⇒ 0.65 + P(E') = 1

⇒ P(E') = 1 - 0.65

⇒ P(E') = 0.35

Hence probability of 'not E' = 0.35

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