Problema Solution

The probability of rain on Thanksgiving Day in Boston is 0.65, while the probability of rain in Honolulu is 0.30. What is the probability that it rains in Boston or Honolulu on Thanksgiving

Answer provided by our tutors

A: Rain on Thanksgiving Day in Boston

p(A) = 0.65

B: Rain in Honolulu

p(B) = 0.30

p(A or B) = p(A) + p(B) - p(A and B)

p(A or B) = 0.65 + 0.30 - p(A and B)

We miss the information about p(A and B).