MHB -find probability it will rain both days

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To find the probability of rain over two days, the probability of rain on a single day must be known, which is not provided in the discussion. Participants express confusion about the source of the 0.2 probability, indicating that it may have been omitted or previously stated. The conversation highlights the importance of having clear data to perform probability calculations. Without this information, all choices presented remain valid but unresolvable. Understanding the foundational probability is crucial for accurate calculations in this context.
karush
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ok I still don't know where the (0.2) comes from
 
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Hmm, yes you're right from this alone we don't seem to be given the P(rain) on one day. All the choices are valid squares of a probability so I don't see some other "trick" that could be used to exclude choices. I'm with you, ksrush.
 
well I'm very weak at probability and statistics so thot there was some hidden message 🐮
 
In order to calculate the probability of rain on two days. you have to know the probability of rain on anyone day! Either they failed to mention that the probability of rain on anyone day was 0.2 or that information was given earlier.
 

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