Question

You flip a coin 3 times. Let x be the number of heads you get. What is p(x=3)A.1/6B.1/2C.1/8D.1/4

Answer 1

The sample space when we toss a coin 3 times is

`\mleft\lbrace\text{HHH,HHT,HTH,THH,TTT,TTH,THT,HTT}\mright\rbrace`

SO

`\begin{gathered} p(x=3)=P\lbrace HHH\rbrace \\ =(1)/(8) \end{gathered}`