Question

probability of event if P(E) = 0.7 then find P(E')​

Answer 1

Answer:

0.3

Step-by-step explanation: We know that, P(E') = 1- P(E)

      P(E')= 1-0.7      

      P(E')=0.3

Answer 2

The value P(E')​ is 0.3 or 30%.

Given:

Probability of event P(E) = 0.7

To find:

Find P(E')​

Solution:

Formula used:

Let E be an event then the probability of the event is denoted by P(E) and the probability that the event is not happening is denoted by P(E').

Here sum of P(E) and P(E') equal to 1

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

=> P(E') = 1 - P(E)

From the data,

Probability of event happening P(E) = 0.7

Using the above formula, P(E') = 1 - P(E)

Probability of event that not happening P(E') = 1 - 07 = 0.3  

Therefore,

The value P(E')​ is 0.3 or 30%.

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