Question

if p(E)=0.8 then find p(not E)​

Answer 1

Step-by-step explanation:

P(e bar)=1

then,

p(not e)= 1-0.8=0.2

Answer 2

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The probability of an event can be only 1 or less than 1.

So, p (E) + p (not E) = 1

0.8+ p (not E) = 1

p (not E) = 1-0.8

∴ p (not E) = 0.2