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16 April, 10:39

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 is telljng us: P (B or

¯

B

) = l.

+1
Answers (1)
  1. 16 April, 12:36
    0
    P (B or B') = 1 means that an adult is certain to have a blood type B or an adult doesn't have a blood type B.

    Step-by-step explanation:

    Given the information from the question. Let B = the event of randomly selecting an adult with a blood type B.

    Know the complement rule in probability theory. The B' (B complement) is the event that an adult doesn't have a blood type B.

    To answer the question. P (B or B') = 1 means that an adult is certain to have a blood type B or an adult doesn't have a blood type B.
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