document.write( "Question 175661: Diana has a box containing 6 blue, 8 red, 5 purple, 9 green, and 2 clear marbles that are all the same size and shape. What is the probability of randomly choosing a clear marble on the first pick; replacing it, and then randomly choosing a purple marble on the second pick? \n" ); document.write( "
Algebra.Com's Answer #130763 by jim_thompson5910(35256) ![]() You can put this solution on YOUR website! Take note that there are 30 marbles (6 blue + 8 red + 5 purple + 9 green + 2 clear = 30 total)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "P(picking clear marble on first pick) = # of clear marbles/# total = 2/30 = 1/15\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Since the first marble was replaced, this means that\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "P(picking purple marble on second pick) = # of purple marbles/# total = 5/30 = 1/6\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "----------------------------------------------------\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now the chances of the two events occurring are:\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "P(picking clear marble on first pick AND picking purple marble on second pick) = P(picking clear marble on first pick) * P(picking purple marble on second pick) = (1/15)(1/6)=1/90\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the probability is 1/90 \n" ); document.write( " |