(b)  

Deleted Obs. (i)	${\mathit{\Delta }}_i{\widehat{\mathit{\beta }}}_{\mathit{3}}$	% change parameter of the std. error	Deleted Obs. (i)	${\mathit{\Delta }}_i{\widehat{\mathit{\beta }}}_{\mathit{4}}$	% change parameter of the std. error
133	0.1185484	23.61	548	0.0042068	31.07
548	−0.1155908	23.02	63	0.0032745	24.18
204	0.1146464	22.83	133	−0.0031662	23.38
244	−0.1056003	21.03	204	−0.0030298	22.38
162	−0.1008921	20.10	244	−0.0027001	19.94
262	−0.098443	19.60	282	−0.0024873	18.37
Sd. error (${\widehat{\mathit{\beta }}}_{\mathit{3}}$) of full model = 0.50215			Sd. error (${\widehat{\mathit{\beta }}}_{\mathit{4}}$) of full model = 0.01354