The points at x = _______ and x = _______ are the inflection points on the normal curve.

STAT 217: STATISTICAL METHODS In-class Final Exam Review Use JMP to help you answer these questions. Each research question below requires a confidence intervalor hypothesis test since these questions are all about the population, rather than the sample. Decide whether each requires a confidence interval or hypothesis test, then carry out the complete analysis showing all steps. Each question is referring to either the backpack-FinalReview.jmp data or thecaraccidents.jmp data from earlier in the quarter. Steps of a Confidence Interval: Steps of a Hypothesis Test: 1. Describe parameter. 1. Define Ho and Ha. 2. Check tech conditions. 2. Describe parameter(s). 3. Find interval. 3. Check tech conditions. 4. Interpret interval. 4. Find p-value. 5. Conclusion. Several years ago some Statistics students collected data on 100 Cal Poly students. Their interest was in the weights of backpacks, but otherdata was collected, as well. The data are located inbackpack-FinalReview.jmp. Open the file to see all of the data that was collected. 1. What proportion of all Cal Poly students are estimated to have back problems Show all steps.