Ole-playing games likedungeons and dragonsoften make use of a variety of different dice. rollingkdice withnfaces then adding up the results is denotedkdn. (e. g. rolling 2 normal dice would be 2d6).you have a choice of two tools in the game, one which rolls using 1d8 and the other which uses 2d4.(a)what is the expected value of the d8? (b)what is the expected value of the 2d4? (c)what is the standard deviation of the d8? (d)what is the standard deviation of the 2d4? (e)you need to roll at least a 7 to stay in the game. which set of dice gives you better odds of succeeding? (f)you need to roll at least a 5 to stay in the game. which set of dice gives you better odds of succeeding?