Write a function called proportion_of_education which returns the proportion of children in the dataset who had a mother with the education levels equal to less than high school (<12), high school (12), more than high school but not a college graduate >12) and college degree. This function should return a dictionary in the form of (use the correct numbers, do not round numbers): {"less than high school":0.2, "high school":0.4, "more than high school but not college":0.2, "college":0.2} In [ ]: def proportion_of_education(): # your code goes here # YOUR CODE HERE raise Not ImplementedError() In [ ]: assert type (proportion_of_education() ==type({}), "You must return a dictionary." assert len(proportion_of_education () == 4, "You have not returned a dictionary with four items in it." assert "less than high school" in proportion_of_education ().keys(), "You have not returned a dictionary with the correct keys." assert "high school" in proportion_of_education().keys(), "You have not returned a dictionary with the correct keys." assert "more than high school but not college" in proportion_of_education().keys(), "You have not returned a dictionary with the assert "college" in proportion_of_education().keys(), "You have not returned a dictionary with the correct keys."