Question

if P(A) =0.85 then what is the probability of not A​

Answer 1

P(A) = 0.85

P(A') = unknown.

We know that:

P(A) + P(A') = 1

0.85 + P(A') = 1

P(A') = 1 - 0.85

P(A') = 0.15

Hence, probability of 'not A' is 0.15

Answer 2

Answer:

P(A') = 0.15

Step-by-step explanation:

A' is everything except A

Convert 0.85 to 85% by multiplying to 100

100% - P(A) = P(A')

(100 - 85)% = P(A')

15% = P(A')