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(5 marks) Prove or disprove: For our usual simple linear regression model, 2 1/122};% 3:1 (5 marks) Prove or disprove: For our usual simple linear

(5 marks) Prove or disprove: For our usual simple linear regression model, 2 1/122};% 3:1

(5 marks) Prove or disprove: For our usual simple linear regression model,

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