Reconsider the previous three exercises.
a. Determine a 95% confidence interval for the difference in mean elasticity (as measured by distance dime is projected) between treated and untreated balsa wood. Use the theory-based approach to find the interval. Be sure to also include an interpretation of the obtained 95% confidence interval.
b. Do the results from the 95% confidence interval agree with your conclusion in the previous exercise? How are you deciding?
c. Address the scope of conclusions for this study by discussing generalization and cause and effect in this study.