document.write( "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 \n" ); document.write( "
Algebra.Com's Answer #736966 by Boreal(15235) 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 \n" ); document.write( "\n" ); document.write( "R=0.15-----R 0.15--0.0225(both days) \n" ); document.write( "-----------NR0.85--0.1275 (1 day) \n" ); document.write( "NR=0.85---R 0.12--0.1275 (1 day) \n" ); document.write( "-----------NR 0.85--0.7225 (0 days)\r \n" ); document.write( "\n" ); document.write( "The probability of at least one rainy day is 0.2775.\r \n" ); document.write( "\n" ); document.write( "This is the same as 1- probability of no rain either day (0.7225). \n" ); document.write( " |