The Sample Space for Tossing Three Fair Coins Is {HHH $\frac { 3 } { 8 }$

Multiple Choice

The sample space for tossing three fair coins is {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}. What is theprobability of exactly two heads?

A) $\frac { 3 } { 8 }$
B) 3
C) $\frac { 1 } { 2 }$
D) $\frac { 5 } { 8 }$