SOLUTION: The probability of it raining tomorrow is 0.12. For the day after, the chance of it not raining is 0.85. By drawing a tree diagram, find the chance of it raining for at least one d

Question 1121138: The probability of it raining tomorrow is 0.12. For the day after, the chance of it not raining is 0.85. By drawing a tree diagram, find the chance of it raining for at least one day out of the tw0
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Note: I edited the rain probability as 0.15, so the probability of one or the other added to 1.00
R=0.15-----R 0.15--0.0225(both days)
-----------NR0.85--0.1275 (1 day)
NR=0.85---R 0.12--0.1275 (1 day)
-----------NR 0.85--0.7225 (0 days)
The probability of at least one rainy day is 0.2775.
This is the same as 1- probability of no rain either day (0.7225).
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