SOLUTION: If there is a 20% chance that it will rain on any given day in December, what is the probability that it will not rain for a week in December?

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Question 1150402: If there is a 20% chance that it will rain on any given day in December, what is the probability that it will not rain for a week in December?
Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


For each day, P(rain) = 0.20 means P(no rain) = 0.80.

P(no rain for 7 days in a row) = 0.80^7 = 0.2097 to 4 decimal places.