Respuesta :
The first flip can obviously return only H or T.
Suppose the coin lands on H. This means that every following string is possible (and thus part of the sample space)
[tex] x_1,\ x_2,\ x_3\ x_4,\quad x_i \in \{H,\ T\} [/tex]
So, there are 16 such strings, because every flip has two possible outcomes.
Suppose now the coin lands on T. Like before, we add to the sample space the following strings:
[tex] x_1,\ x_2,\quad x_i \in \{H,\ T\} [/tex]
And thus there are 4 such strings, because we have two choices for each of the two flips.
So, the sample space has 20 outcomes:
H - HHHH
H - HHHT
H - HHTH
H - HHTT
H - HTHH
H - HTHT
H - HTTH
H - HTTT
H - THHH
H - THHT
H - THTH
H - THTT
H - TTHH
H - TTHT
H - TTTH
H - TTTT
T - HH
T - HT
T - TH
T - TT
The number of possible outcomes in the sample space is 20.
Let:
Head = H
Tail = T
[tex]k^{n}[/tex]
Where;
k = number of outcomes per flip
n = number flips
If :
Head, H ;
4 more flips ; n = 4 ; k = 2
Sample space = [tex]2^{4}[/tex]
Sample space = 2 × 2 × 2 × 2 = 16
If ;
Tail, T ;
2 more flips ; n = 2 ; k = 2
Sample space = [tex]2^{2}[/tex]
Sample space = 2 × 2 = 4
Total sample space = 16 + 4 = 20 possible samples.
Learn more : https://brainly.com/question/18153040