(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]

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