Let A and B be two disjoint events such that P(A) = 0.47 and P(B) = 0.3. What is P(A or B)?

Mathematics

2 answers:

Alchen [17]3 years ago

6 0

<h3>Answer: 0.77</h3>

Work Shown:

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

P(A or B) = 0.47 + 0.30

P(A or B) = 0.77

Notes:

The formula only works if A and B are disjoint, aka mutually exclusive
If A and B are not disjoint, then use this formula: P(A or B) = P(A) + P(B) - P(A and B)

GrogVix [38]3 years ago

4 0

Answer:

P(A or B) = 0.77

Step-by-step explanation:

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