In a Game Called Taxation and Evasion,a Player Rolls a Pair

Short Answer

In a game called Taxation and Evasion,a player rolls a pair of dice.If on any turn the sum is 7,11 or 12,the player gets audited.Otherwise,she avoids taxes.Suppose a player takes five turns at rolling the dice.
-The standard deviation of the number of times she will be audited is ______.