One of the tasks that forensic scientists face is estimating the age of an unidentified crime victim. Priorto 2010, this was usually done by analyzing teeth and bones, and the resulting estimates were not veryreliable. In a groundbreaking study, scientists examined the relationship between age and a blood testmeasure. They recorded age and the blood test measure for 195 people ranging in age from 7 to 80years. The scientists were interested in predicting age using the blood test measure.The following sample of 15 people will be used in this problemBlood test measureAge-819-612-1142-822-1358-1577-1470-67-1245-1037-935-720-928-1365-12751. Which of these two variables is the response variable and which is the predictor variable?2. Construct a scatterplot of the data. How would you describe the relationship between these twovariables?3. Find the equation of the least squares regression line.4. Construct a residual plot and comment on any unusual features of the residual plot. (includinginfluential observations and outliers, unusual patterns)5. Calculate and interpret the value of r2 in context of this study.6. Explain why it would also be informative to look at the value of sę in addition to the value of r?when evaluating the usefulness of the least squares regression line.7. Calculate and interpret the value of se.8. Based on your answers to parts 4 to 7, do you think it is appropriate to use the least squaresregression line to predict the age of a victim using the blood test measure? Explain.9. Two unidentified crime victims were found. The values of blood test measure are determined tobe -10 for the first victim and -4 for the second victim. Predict (if possible) the age of the victims.Explain why if not.

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One of the tasks that forensic scientists face is estimating the age of an unidentified crime victim. Prior to 2010, this was usually done by analyzing teeth and bones, and the resulting estimates were not very reliable. In a groundbreaking study, scientists examined the relationship between age and a blood test measure. They recorded age and the blood test measure for 195 people ranging in age from 7 to 80 years. The scientists were interested in predicting age using the blood test measure. The following sample of 15 people will be used in this problem Blood test measure Age -8 19 -6 12 -11 42 -8 22 -13 58 -15 77 -14 70

One of the tasks that forensic scientists face is estimating the age of an unidentified crime victim. Prior to 2010, this was usually done by analyzing teeth and bones, and the resulting estimates were not very reliable. In a groundbreaking study, scientists examined the relationship between age and a blood test measure. They recorded age and the blood test measure for 195 people ranging in age from 7 to 80 years. The scientists were interested in predicting age using the blood test measure. The following sample of 15 people will be used in this problem Blood test measure Age -8 19 -6 12 -11 42 -8 22 -13 58 -15 77 -14 70

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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