part(a)-(e) please

For n = 76 brands of breakfast cereals, calories per serving, sodium content (in mg), carbohydrate content (in g) and sugar content (in g) were measured. The summaries below include the correlation matrix and the multiple regression with calories as the response variable. Correlation matrix calories acdium sugars carbe calories sodium sugars carbo Min. 1 50 9.08 60 calories 1,6006 0-2992 0. 5656 0.2676 Let Qu. : 100 3.00 12_D modius D. 2902 1.DO00 0. 068D D. 2917 Median #116 180 7.06 14 6 Sugars 0. 5665 0.0689 1.6000 -0.4712 Mean 162 7.03 14-8 carbo 0. 2676 0-2977 -0.4712 1.9090 Jrd Qu. :1LD 212 11.00 17.D Max. :160 320 15.00 Cost fictenta: Estimate Bid. Error & walse Pr(it!) (Istercapt) 39. 4304 7.2004 4.05 0. DO043 modium D.0127 0.0172 D. 75 0.4587T 8.8967 9.3497 11. 14 |t|) (Intercept) 29. 1384 7.2004 4.05 0. 00013 sodium 0. 0129 0. 0172 0. 75 0. 45677 sugars 3.8957 0. 3497 11.14