document.write( "Question 1042133: I need help on parts A and B please.\r
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\n" ); document.write( "\n" ); document.write( "8.
\n" ); document.write( "a) If you flip three coins onto the floor, write out the sample space to observe
\n" ); document.write( " all possibilities of how the coins fall (heads or tails):\r
\n" ); document.write( "\n" ); document.write( " SAMPLE SPACE (list all possibilities):
\n" ); document.write( " List them here in a square.
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\n" ); document.write( "\n" ); document.write( "b) In flipping three coins, what is the probability that you get exactly 2 tails to fall? __________
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Algebra.Com's Answer #657119 by jim_thompson5910(35256)\"\" \"About 
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\n" ); document.write( "8.
\n" ); document.write( "a) If you flip three coins onto the floor, write out the sample space to observe
\n" ); document.write( "all possibilities of how the coins fall (heads or tails):
\n" ); document.write( "SAMPLE SPACE (list all possibilities):
\n" ); document.write( "List them here in a square.\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "H = heads
\n" ); document.write( "T = tails\r
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\n" ); document.write( "\n" ); document.write( "Sample Space:
\n" ); document.write( "HHH
\n" ); document.write( "HHT
\n" ); document.write( "HTH
\n" ); document.write( "THH
\n" ); document.write( "HTT
\n" ); document.write( "THT
\n" ); document.write( "TTH
\n" ); document.write( "TTT\r
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\n" ); document.write( "\n" ); document.write( "There are 8 items in the sample space
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\n" ); document.write( "\n" ); document.write( "b) In flipping three coins, what is the probability that you get exactly 2 tails to fall? __________\r
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\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "Look above at the sample space in part (a). Notice how tails T shows up twice in the cases
\n" ); document.write( "HTT
\n" ); document.write( "THT
\n" ); document.write( "TTH
\n" ); document.write( "which is three times out of eight total. So the probability as a fraction is 3/8. The probability as a decimal is 0.375 (use a calculator to find 3/8 = 0.375)
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