Can you please help with this question? Life insurance companies are keenly interested in predicting how long their customers will live, because their premiums and profitability depend on such numbers. An actuary for one insurance company gathered data from 100 recently deceased male customers. He recorded the age at death of the customer plus the ages at death of his mother and father, the mean ages at death of his grandmothers and the mean ages at death of his grandfathers. These data are recorded in columns 1 to 5 respectively, in file LONGEVITY.xlsx. a Perform a multiple regression analysis on these data. b Interpret the coefficient estimates and their signs. c Test for the significance of all the independent variable coefficients. (alpha = 0.05) d Is the model likely to be useful in predicting men’s longevity? e Are the required conditions satisfied? Justify your answer. f Predict the longevity of a man whose parents lived to the age of 70, whose grandmothers averaged 80 years and whose grandfathers averaged 75. Longevity Mother Father Gmothers Gfathers 80 85 78 72 71 73 88 63 76 66 70 66 75 67 57 72 72 67 68 55 79 88 73 64 73 83 90 72 74 62 70 67 65 70 59 72 76 71 74 61 72 66 75 71 63 71 78 64 76 61 67 69 66 61 69 74 71 76 73 60 80 74 77 69 68 63 68 66 67 67 71 70 70 71 67 66 64 66 63 57 74 82 71 75 65 71 71 71 68 62 65 75 60 63 62 74 76 66 66 69 66 69 68 61 65 71 76 67 63 71 73 69 80 64 61 74 79 70 77 60 68 74 62 59 63 77 81 78 73 62 77 85 69 80 65 74 77 69 75 69 68 72 71 72 66 68 75 63 65 65 74 82 66 72 62 71 73 72 68 71 80 84 73 77 68 72 75 61 77 61 77 82 76 71 63 76 88 69 75 67 62 65 57 68 57 70 75 57 67 57 71 72 67 67 64 69 72 63 68 67 73 79 71 74 65 72 77 69 72 65 84 80 90 72 71 73 76 74 69 65 70 78 70 78 54 78 75 74 58 70 82 83 78 77 65 77 75 66 72 60 67 68 69 73 62 72 69 72 69 68 67 67 67 72 66 72 78 64 67 66 75 73 69 71 61 72 71 66 68 68 75 73 73 66 59 80 84 75 71 74 72 78 64 66 61 71 76 61 74 61 71 77 70 73 61 89 86 77 74 69 74 79 71 70 77 72 72 77 71 68 74 78 68 67 72 77 85 77 77 71 77 72 72 63 64 73 67 71 65 69 72 74 64 74 62 65 66 63 72 60 81 82 77 73 69 76 80 70 63 60 64 71 67 66 66 72 73 69 64 67 69 75 67 60 62 59 59 62 68 56 69 73 69 72 53 76 82 65 72 69 63 71 56 61 53 66 74 64 72 63 72 85 60 67 67 68 72 66 65 68 73 80 75 67 67 78 82 72 71 72 83 82 82 76 72 78 82 70 76 64 67 73 62 65 59 70 77 60 69 67 68 74 79 72 65 66 80 63 75 59 75 76 72 69 64 71 71 60 71 66 72 77 64 70 69 71 76 67 66 64 77 79 74 73 70 67 68 68 70 57 68 71 61 66 64 67 76 62 66 62 74 77 64 66 69 70 66 68 63 66 72 78 70 71 64 69 73 60 74 60

Can you please help with this question? Life insurance companies are keenly interested in predicting how long their customers will live, because their premiums and profitability depend on such numbers. An actuary for one insurance company gathered data from 100 recently deceased male customers. He recorded the age at death of the customer plus the ages at death of his mother and father, the mean ages at death of his grandmothers and the mean ages at death of his grandfathers. These data are recorded in columns 1 to 5 respectively, in file LONGEVITY.xlsx. a Perform a multiple regression analysis on these data. b Interpret the coefficient estimates and their signs. c Test for the significance of all the independent variable coefficients. (alpha = 0.05) d Is the model likely to be useful in predicting men’s longevity? e Are the required conditions satisfied? Justify your answer. f Predict the longevity of a man whose parents lived to the age of 70, whose grandmothers averaged 80 years and whose grandfathers averaged 75. Longevity Mother Father Gmothers Gfathers 80 85 78 72 71 73 88 63 76 66 70 66 75 67 57 72 72 67 68 55 79 88 73 64 73 83 90 72 74 62 70 67 65 70 59 72 76 71 74 61 72 66 75 71 63 71 78 64 76 61 67 69 66 61 69 74 71 76 73 60 80 74 77 69 68 63 68 66 67 67 71 70 70 71 67 66 64 66 63 57 74 82 71 75 65 71 71 71 68 62 65 75 60 63 62 74 76 66 66 69 66 69 68 61 65 71 76 67 63 71 73 69 80 64 61 74 79 70 77 60 68 74 62 59 63 77 81 78 73 62 77 85 69 80 65 74 77 69 75 69 68 72 71 72 66 68 75 63 65 65 74 82 66 72 62 71 73 72 68 71 80 84 73 77 68 72 75 61 77 61 77 82 76 71 63 76 88 69 75 67 62 65 57 68 57 70 75 57 67 57 71 72 67 67 64 69 72 63 68 67 73 79 71 74 65 72 77 69 72 65 84 80 90 72 71 73 76 74 69 65 70 78 70 78 54 78 75 74 58 70 82 83 78 77 65 77 75 66 72 60 67 68 69 73 62 72 69 72 69 68 67 67 67 72 66 72 78 64 67 66 75 73 69 71 61 72 71 66 68 68 75 73 73 66 59 80 84 75 71 74 72 78 64 66 61 71 76 61 74 61 71 77 70 73 61 89 86 77 74 69 74 79 71 70 77 72 72 77 71 68 74 78 68 67 72 77 85 77 77 71 77 72 72 63 64 73 67 71 65 69 72 74 64 74 62 65 66 63 72 60 81 82 77 73 69 76 80 70 63 60 64 71 67 66 66 72 73 69 64 67 69 75 67 60 62 59 59 62 68 56 69 73 69 72 53 76 82 65 72 69 63 71 56 61 53 66 74 64 72 63 72 85 60 67 67 68 72 66 65 68 73 80 75 67 67 78 82 72 71 72 83 82 82 76 72 78 82 70 76 64 67 73 62 65 59 70 77 60 69 67 68 74 79 72 65 66 80 63 75 59 75 76 72 69 64 71 71 60 71 66 72 77 64 70 69 71 76 67 66 64 77 79 74 73 70 67 68 68 70 57 68 71 61 66 64 67 76 62 66 62 74 77 64 66 69 70 66 68 63 66 72 78 70 71 64 69 73 60 74 60

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Life insurance companies are keenly interested in predicting how long their customers will live, because their premiums and profitability depend on such numbers. An actuary for one insurance company gathered data from 100 recently deceased male customers. He recorded the age at death of the customer plus the ages at death of his mother and father, the mean ages at death of his grandmothers and the mean ages at death of his grandfathers. These data are recorded in columns 1 to 5 respectively, in file LONGEVITY.xlsx. a Perform a multiple regression analysis on these data. b Interpret the coefficient estimates and their signs. c Test for the significance of all the independent variable coefficients. (alpha = 0.05) d Is the model likely to be useful in predicting men’s longevity? e Are the required conditions satisfied? Justify your answer. f Predict the longevity of a man whose parents lived to the age of 70, whose grandmothers averaged 80 years and whose grandfathers averaged 75.

Longevity	Mother	Father	Gmothers	Gfathers
80	85	78	72	71
73	88	63	76	66
70	66	75	67	57
72	72	67	68	55
79	88	73	64	73
83	90	72	74	62
70	67	65	70	59
72	76	71	74	61
72	66	75	71	63
71	78	64	76	61
67	69	66	61	69
74	71	76	73	60
80	74	77	69	68
63	68	66	67	67
71	70	70	71	67
66	64	66	63	57
74	82	71	75	65
71	71	71	68	62
65	75	60	63	62
74	76	66	66	69
66	69	68	61	65
71	76	67	63	71
73	69	80	64	61
74	79	70	77	60
68	74	62	59	63
77	81	78	73	62
77	85	69	80	65
74	77	69	75	69
68	72	71	72	66
68	75	63	65	65
74	82	66	72	62
71	73	72	68	71
80	84	73	77	68
72	75	61	77	61
77	82	76	71	63
76	88	69	75	67
62	65	57	68	57
70	75	57	67	57
71	72	67	67	64
69	72	63	68	67
73	79	71	74	65
72	77	69	72	65
84	80	90	72	71
73	76	74	69	65
70	78	70	78	54
78	75	74	58	70
82	83	78	77	65
77	75	66	72	60
67	68	69	73	62
72	69	72	69	68
67	67	67	72	66
72	78	64	67	66
75	73	69	71	61
72	71	66	68	68
75	73	73	66	59
80	84	75	71	74
72	78	64	66	61
71	76	61	74	61
71	77	70	73	61
89	86	77	74	69
74	79	71	70	77
72	72	77	71	68
74	78	68	67	72
77	85	77	77	71
77	72	72	63	64
73	67	71	65	69
72	74	64	74	62
65	66	63	72	60
81	82	77	73	69
76	80	70	63	60
64	71	67	66	66
72	73	69	64	67
69	75	67	60	62
59	59	62	68	56
69	73	69	72	53
76	82	65	72	69
63	71	56	61	53
66	74	64	72	63
72	85	60	67	67
68	72	66	65	68
73	80	75	67	67
78	82	72	71	72
83	82	82	76	72
78	82	70	76	64
67	73	62	65	59
70	77	60	69	67
68	74	79	72	65
66	80	63	75	59
75	76	72	69	64
71	71	60	71	66
72	77	64	70	69
71	76	67	66	64
77	79	74	73	70
67	68	68	70	57
68	71	61	66	64
67	76	62	66	62
74	77	64	66	69
70	66	68	63	66
72	78	70	71	64
69	73	60	74	60

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