Question

P(A)-P(Not A)=0.2 Find P(A)

Answer 1

Answer:

We know

P( Not A ) = 1 - P ( A )

P(A) - ( 1 - P(A)) = 0.2

P(A) - 1 + P(A) = 0.2

2P(A) = 1 + 0.2 = 1.2

P(A) = 0.6

Answer 2

The value of P(A) is equal to 0.6.

Step-by-step explanation:

We know

P(A)  - P(Â) = 0.2            ......... (1)

To find, the value of P(A) = ?

We know that,

P(A) + P(Â) = 1            ......... (2)

Adding equations (1) and (2), we get

P(A)  - P(Â) + P(A) + P(Â) = 0.2 + 1

⇒  2P(A) = 1.2

⇒ P(A)  = $\dfrac{1.2}{2}$

⇒ P(A) = 0.6

∴  The value of P(A) = 0.6

Thus, the value of P(A) is equal to 0.6.