SPSS Question 2 Use the methods learned in class to completely solve the following problem. For all the testing procedures, follow the steps of hypothesis testing at the 10% significance level. Clearly state the conclusions in terms of the problem. Check regression assumptions and tat the best model. Be sure to only include the relevant computer output or data window values. Page 1 of 2 (15 points) The data below represent the results of a study on nitrogen levels in skeletal bones. Of interest is to determine what factors affect the nitrogen levels observed in the bones. The response (Y) is the nitrogen level in grams per 100 grams of bone. The independent variables are: X1burial time (in years), Xzburial depth (in feet), and X3age of the person at the time of death. Perform the complete appropriate analysis (1'. e. , choose the best model for predicting nitrogen levels in skeletal bones and check all assumptions). X1 45.5 36.3 46.5 45.5 53.0 47.9 59.5 52.3 56.5 56.3 63.0 32.5 59.0 35.3 58.3 59.6 52.0 40.2 X2 8.00 7.50 6.50 6.50 6.50 7.50 8.00 8.00 8.00 8.00 6.50 9.00 7.50 8.50 7.00 9.25 8.00 9.50 X3 29 48 35 34 38 47 26 23 35 23 40 51 61 39 21 46 24 64 Y 3.97 3.96 3.69 3.75 3.75 3.92 3.76 3.93 3.70 3.82 3.78 4.00 3.92 3.79 3.73 3.72 3.85 4.06