Outline the procedure for finding the probabilities of any given compound event

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asked Mar 16, 2021 93.7k views

1 Answer

Claytonjwong · Answer 1 · 2021-03-20T18:43:19+0000

Step-by-step explanation:

We will discuss the probability of any given Compound event under two broad heading. Exclusivity and Dependence.

Two or more events are mutually exclusive if they cannot occur at the same time.

In mutually excusive events,

$P(A \cap B)=0$

The probability of two mutually exclusive events is given as:

P(A or B)=P(A)+P(B)

If however the two events can occur at the same time, they are mutually inclusive and:
$P(A \cap B)\\eq 0$ .

For mutually inclusive events A and B,

$P(A or B)=P(A)+P(B)-P(A \cap B$ .

Two events are independent if the outcome of one does not affect the outcome of the other.

For two independent events, the probability of A and B,

$P(A \cap B)=P(A) * P(B)$ .

Two events are not independent if the outcome of one affect the outcome of the other.

For two dependent events, if A is dependent of B, we say that the probability of A given B,

$P(A|B)=(P(A) \cap P(B))/(P(B))$ .