4.17 only

relationship between nitrogen assimilation and body mass (both on log scales) for data on a sample of e. Is the LogMass variable really needed in the model caterpillars in Caterpillars. The Instar variable in the of part (d)? Indicate how you make this decision data codes different stages (1 to 5) of caterpillar with a formal test. development. fin Caterp f. Are the indicators for Instar as a group really a. Fit a model to predict log nitrogen assimilation needed in the model of part (d)? Indicate how you (LogNassim) using log body mass (LogMass). make this decision with a formal test. Report the value of R for this model. Topic 4.6 Exercises: Randomization Test for a Relationship b. Fit a model to predict LogNassim using 4.17 Baseball game times. The data in appropriate indicators for the categories of Instar. BaseballTimes2017 contain information from 15 Major Report the value of R for this model and League Baseball games played on August 11, 2017. In compare it to the model based on LogMass. Exercise 1.45 on page 57, we considered models to predict the time a game lasts (in minutes). One of c. Give an interpretation (in context) for the first the potential predictors is the number of runs scored two coefficients of the fitted model in (b). in the game. Use a randomization procedure to test whether there is significant evidence to conclude that d. Fit a model to predict LogNassim using LogMass the correlation between Runs and Time is greater than and appropriate indicators for Instar. Report the zero. Im BballT value of R2 and compare it to the earlier models. 4.18 GPA by Verbal SAT slope. In Example 4.11 on page 181, we looked at a randomization test for the correlation between GPA values and Verbal SAT scores