Word Problems with a Sample Data Set:
- A sample of Full-time SUNY Poly students were asked how manycredit hours they were taking this semester and the followinginformation was obtained. Assume credit hours are approximatelynormally distributed.
16Â Â Â Â Â Â Â 18Â Â Â Â Â Â Â 12Â Â Â Â Â Â Â 17Â Â Â Â Â Â Â 20Â Â Â Â Â Â Â 18Â Â Â Â Â Â Â 15Â Â Â Â Â Â Â 14
*Round all final answers to 2 decimalplaces if necessary
- Construct a 90% confidence interval for the populationmean
- Construct a 95% confidence interval for the population standarddeviation
- SUNY Poly claims that all their students average less than 18credit hours per semester. Test SUNY’s claim at α = 0.05, what canyou conclude about the claim?
