From science to arts, IDNLearn.com has the answers to all your questions. Ask any question and receive accurate, in-depth responses from our dedicated team of experts.

Given any two events, [tex]E_1[/tex] and [tex]E_2[/tex], what does the probability [tex]P\left(E_1 \cup E_2\right)[/tex] represent?

A. One of the events occurs but not both.
B. Both of the events occur.
C. One of the events occurs, or both occur.
D. Neither event occurs.


Sagot :

To understand what the probability [tex]\( P\left(E_1 \cup E_2\right) \)[/tex] represents, it is important first to understand what the notation [tex]\( \cup \)[/tex] signifies in probability theory.

The symbol [tex]\( \cup \)[/tex] is called the union of two events. For any two events [tex]\( E_1 \)[/tex] and [tex]\( E_2 \)[/tex], the union [tex]\( E_1 \cup E_2 \)[/tex] consists of all outcomes that are in [tex]\( E_1 \)[/tex], in [tex]\( E_2 \)[/tex], or in both [tex]\( E_1 \)[/tex] and [tex]\( E_2 \)[/tex]. Therefore, the union represents the event that at least one of the events [tex]\( E_1 \)[/tex] or [tex]\( E_2 \)[/tex] happens. It includes the scenarios where:
- Only [tex]\( E_1 \)[/tex] occurs,
- Only [tex]\( E_2 \)[/tex] occurs,
- Both [tex]\( E_1 \)[/tex] and [tex]\( E_2 \)[/tex] occur simultaneously.

Let's examine the given options one by one:

A. One of the events occurs but not both.
- This describes the situation where either [tex]\( E_1 \)[/tex] occurs and [tex]\( E_2 \)[/tex] does not, or [tex]\( E_2 \)[/tex] occurs and [tex]\( E_1 \)[/tex] does not. This does not account for the scenario where both events [tex]\( E_1 \)[/tex] and [tex]\( E_2 \)[/tex] occur together.

B. Both of the events occur.
- This describes the intersection of events [tex]\( E_1 \)[/tex] and [tex]\( E_2 \)[/tex] which is denoted by [tex]\( E_1 \cap E_2 \)[/tex]. This does not include the scenarios where only [tex]\( E_1 \)[/tex] occurs or only [tex]\( E_2 \)[/tex] occurs.

C. One of the events occurs, or both occur.
- This accurately describes the union [tex]\( E_1 \cup E_2 \)[/tex]. It includes all scenarios where at least one of the events happens, and it incorporates the cases where both events happen too.

D. Neither event occurs.
- This describes the complement of the union [tex]\( (E_1 \cup E_2)^c \)[/tex]. This means neither [tex]\( E_1 \)[/tex] nor [tex]\( E_2 \)[/tex] happens, which is not what [tex]\( P(E_1 \cup E_2) \)[/tex] represents.

Given this understanding, the correct interpretation of the probability [tex]\( P\left(E_1 \cup E_2\right) \)[/tex] is:

C. One of the events occurs, or both occur.
We appreciate every question and answer you provide. Keep engaging and finding the best solutions. This community is the perfect place to learn and grow together. Your questions find clarity at IDNLearn.com. Thanks for stopping by, and come back for more dependable solutions.