Assume that a weather forecast for tomorrow states that it rains in Johannesburg with probability 0,2 and it rains in Pretoria with probability 0,3. Assume further that we are told that if it does rain in Pretoria, then it rains in Johannesburg with 0.8 probability. Calculate the following
a) The probability that it rains in both Pretoria and Johannesburg.
B) The probability that it rains in at least one of the cities.
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