Question: Write mean_square(), a function that calculates and returns the mean (average) of the squares of the values in array. The function prototype is: double mean_square(

Write mean_square(), a function that calculates and returns the mean (average) of the squares of the values in array. The function prototype is: double mean_square( double *a, int size ); For example: if the arguments were a = { 1, 2, 3, 4 }, size = 4 then the return value would be = ( 1 2 + 2 2 + 3 2 + 4 2 ) / 4 = 7.50000 Assume all necessary header files are included. Do NOT write main(), do NOT print anything.

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