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When randomly selecting an​ adult, let b represent the event of randomly selecting someone with type b blood. write a sentence describing what the rule of complements below is telling us. upper p left parenthesis upper b or upper b overbar right parenthesisequals1?

Respuesta :

Edufirst
The upper bar over B means not B, so the given rule is: P (B or not B) = 1.

The sentence is:

The probability of having type B blood or not having this type of blood is 1, because the two events, having B blood and not having B blood, are complementary, meaning that they constitute the whole universe.

It is certain that the selected adult has type B blood or does not have type B blood.

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