document.write( "Question 455297: During Spring break on the aleutian islands, the chance of snow on any given day is 45%
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document.write( "A) what is the probability that it will snow at most 2 out of 7 days - long spring break?
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document.write( "B) what is the probability that it will not snow at all during spring break?\r
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document.write( "I do not know the steps for trying to solve this problem. Please help \n" );
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Algebra.Com's Answer #312636 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! During Spring break on the aleutian islands, the chance of snow on any given day is 45% \n" ); document.write( "--- \n" ); document.write( "Each day it either snows or it doesn't. \n" ); document.write( "That is a binomial Problem. \n" ); document.write( "--- \n" ); document.write( "A) what is the probability that it will snow at most 2 out of 7 days - long spring break? \n" ); document.write( "--- \n" ); document.write( "n = 7 and p = 0.45 \n" ); document.write( "Using a TI-84 calculator I get: \n" ); document.write( "P(0<= x <=2) = binomcdf(7,0.45,2) = 0.3164 \n" ); document.write( "---------------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "B) what is the probability that it will not snow at all during spring break? \n" ); document.write( "P(not snow) = 0.55 \n" ); document.write( "---- \n" ); document.write( "P(not snow for 7 days) = 0.55^7 = 0.01522 \n" ); document.write( "================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------- \n" ); document.write( " \n" ); document.write( " |