8) (5 points each) Abalones are edible sea snails that include over 100 species. A researcher is working with a model that uses the number of rings in an Abalone's shell to predict its age. He finds an observation that he believes has been miscalculated. After deleting this outlier, he redoes the calculation. Here are the summaries: Before: After: Dependent variable is Age Dependent variable is Age R@squared = 67.5% R@squared = 83.9% Variable Coefficient Variable Coefficient Intercept 1.736 Intercept 1.56 Rings 0.45 Rings 1.13 a) Does it appear that this outlier was exerting very much influence? Explain. b) Later, this researcher finds a number of shells that have large residuals and is considering removing all of them. Is this good practice? Explain. 9) (4 points each) An elementary school teacher with 25 students plans to have each of them make a poster about two different states. The teacher first numbers the states (in alphabetical order, from 1-Alabama to 50-Wyoming), then uses a random number table to decide which states each student gets. Here are some random digits: 45921 01710 22892 37076 a) Which two state numbers does the first student get? b) Which two state numbers go to the second student