def rmse_interval(df, start, end): """ Given a design matrix X and response vector Y, computes the RMSE for a subset of values wherein the corresponding Log Sale Price lies in the interval [start, end]. Input: df : pandas DataFrame with columns "True Log Sale Price", "Predicted Log Sale Price", "True Sale Price", "Predicted Sale Price" start : A float specifying the start of the interval (inclusive) end : A float specifying the end of the interval (inclusive) """ subset_df = ... rmse_subset = ... return rmse_subset