Day	Tumor Size
1	929.98
5	1096.53
9	1575.88
13	1898.86
17	1910.15
21	1835.23
25	1946.98
29	1630.57
33	1990.56
37	1869.14
41	1897.93
45	2171.50
49	1844.33
53	2243.03
57	2136.84
61	2117.31
65	1718.64
69	1831.17
73	1631.77
77	1496.71
81	1591.94
85	1562.02
89	1750.29
93	1579.29
97	1587.08
101	1226.70

An experiment was designed to investigate how the size of a tumor is affected by a new treatment. The size of the tumor (in mm3) was measured every 4 days since the start of the treatment; measurements and days on which they were obtained are given in the table below. There were total of n = 26 observations Using R, fit the following model Y; = a0 +019+222 +agz? +e; where I; is the day, and y; is the tumor size, i =1,2,..., 26. Comment on the output from summary for this model; you should comment both on the significance and value of the estimated parameters, F-statistic and R2 and adjusted R2 Perform residual analysis for this model. An experiment was designed to investigate how the size of a tumor is affected by a new treatment. The size of the tumor (in mm3) was measured every 4 days since the start of the treatment; measurements and days on which they were obtained are given in the table below. There were total of n = 26 observations Using R, fit the following model Y; = a0 +019+222 +agz? +e; where I; is the day, and y; is the tumor size, i =1,2,..., 26. Comment on the output from summary for this model; you should comment both on the significance and value of the estimated parameters, F-statistic and R2 and adjusted R2 Perform residual analysis for this model