A coin is tossed three times. An outcome is represented by a string of the sort HTT (meaning a head on the first toss, followed by two tails). The 8 outcomes are listed in the table below. Note that each outcome has the same probability.
For each of the three events in the table, check the outcome(s) that are contained in the event. Then, in the last column, enter the probability of the event.
Outcomes
Probability
Da
HTT
THH
HHT
HTH
TTT
THT
HHH
TTH
х
?
0
O
0
Event A: A tall on the first toss
e
0
Event B: A tall on the first toss or the second
toss (or both)
D
B
B
0
Event C: Alternating head and tail (with either
coming first)