The sample space, S, of a coin being tossed three times is shown below, where H and T denote
the coin landing on heads and tails respectively.
S={HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}
Let X = the number of times the coin comes up heads. What is the probability distribution for the
number of heads occurring in three coin tosses?
X 0
P(X)
1
X 0
10-10
P(X)
8
1
1
7
135
214
314
236
316
X
1
P(X) 0
X
1
P(X) 1
213
223
3113
323
423
4113
513
52/3
623
613
723
713
8
1
80
Done →