// Mean is the average of given numbers. double array_mean(double arr[], int num_items){ double sum=0; for(int i=0;i< num_items;i++){ sum = sum + arr[i]; } return sum/num_items; } Solution // Mean is the average of given numbers. double array_mean(double arr[], int num_items){ double sum=0; for(int i=0;i< num_items;i++){ sum = sum + arr[i]; } return sum/num_items; }.