Question 1042133
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8. 
a) If you flip three coins onto the floor, write out the sample space to observe 
all possibilities of how the coins fall (heads or tails): 
SAMPLE SPACE (list all possibilities):
List them here in a square.

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H = heads
T = tails


Sample Space:
HHH
HHT
HTH
THH
HTT
THT
TTH
TTT


There are 8 items in the sample space
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b) In flipping three coins, what is the probability that you get exactly 2 tails to fall? __________


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Look above at the sample space in part (a). Notice how tails T shows up twice in the cases
HTT
THT
TTH
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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