please show work to understand :)   A gambler is going to play a gambling game. In each game, the chance of winning $3 is 2/10, the chance of losing $2 is 3/10, and the chance of losing $1 is 5/10. Suppose the gambler is going to play the game 5 times. (a) Write down the box model for keeping track of the net gain and the box model for keeping track of the number of winning plays. (b) Calculate the expected value and standard error for the number of winning plays. (c) Would it be appropriate to use the normal approximation for the number of winning plays? Why or why not?

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