Dice and dollars You roll a die, winning nothing if the number of spots is odd, $1 for a 2 or a 4, and $10 for a 6. a) Find the expected value and standard deviation of your prospective winnings. b)...

Dice and dollars You roll a die, winning nothing if the number of spots is odd, $1 for a 2 or a 4, and $10 for a 6.

a) Find the expected value and standard deviation of your prospective winnings.

b) You play twice. Find the mean and standard deviation of your total winnings.