Answered step by step
Verified Expert Solution
Question
1 Approved Answer
21) Can your life expectancy be predicted from the gestational age that you were born at? A large longitutional study looked at the age
21) Can your life expectancy be predicted from the gestational age that you were born at? A large longitutional study looked at the age adults were when they died from natural causes (in years) and the gestational age they were when they were born (in weeks). Gestational age is the common term used during pregnancy to describe how far along the pregnancy is. Below, there is a table of the data, a scatterplot of the data, a residual plot, and a dotplot of the data. Gestational Age Age at Death 84- 26.6 78.7 83.5- 35.4 78.8 83- 35.3 79 35.5 79.1 28.8 79.3 27.7 79.5 28.3 79.8 37.0 80.1 31.4 80.2 Age at Death (Years) 82.5- 82- 81.5- 81- 80.5- 80- 34.0 80.7 33.7 81 79.5- 32.2 81 79- 32.3 81.2 78.5- 34.3 81.7 26 28 30 32 34 36 38 40 37.0 81.7 Gestational Birth Age (Weeks) 31.8 81.5 32.5 82.1 40.8 82.2 35.3 82.8 38.8 83.1 33.6 83.3 Residual 33.6 83.2 38.3 83.5 36.3 83.8 26 28 30 32 34 36 38 40 Gestational Birth Age (Weeks) 38.3 83.6 36.1 83.8 33.4 84 35.4 83.7 800808 8000 36.9 84.1 -3 -2.5 T -2 -1.5 -1 40.1 84 -0.5 Residual 0 0.5 1 1.5 2 2.5 (a) What is the equation of the least-squares regression line based on these data? Define any variables used. (b) Interpret the slope of the regression line. (c) Are the conditions needed to perform inference using t-procedures met? Explain. (d) Assuming all conditions have been met, construct and interpret a 90% confidence interval for the slope of the least squares regression of age at death on gestational birth age. 1.5 B0 (e) If you were to perform a test of the hypotheses Ho: =0 and Ho: 0 at a =0.10 level, what would you conclude? Justify your answer using your result in part (d).
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started