Create a function called curve$\_$grades$()$

This function wil reoceive a Numpy array of grades and a desired mean value and change the grade values to match the desired mean. Check the mean of the array with get$\_$stats$()$ function.

Parameters Numpy array of grades the old mean and the desired new mean value

Return: mean$-$adjusted numpy array of grades

Now will curve theve scores to bring up the class grades One formula to do uses the anctangent

Example: