(b) Consider minimising the following penalized sum of squared errors.12( – )2+ (| |)over , where is the real line and is a non-negative tuning
(b) Consider minimising the following penalized sum of squared errors.12( – )2+ (| |)over , where is the real line and is a non-negative tuning parameter.i. For (| |)= 2 2, show that (1) is widehat( )= 1+ .[4 marks]ii. Take )≠(0, where (*) denotes an indicator function, which is one if the statement in (*) is true and 0 otherwise. Show that (1) is )>( .[5 marks] This