Table of contents 1. Introduction1 2. Problem Statement1 3. Hypothesis1 4. P-value1 5. Statistical summary2 6. 95% confidence interval 2 7. Conclusion3 Appendix 14 1. Introduction This report is about the case study of PAR, INC. From the following book: Statistics for Business an Economics, 8th edition by D.R. Anderson, D.J. Sweeney and Th.A. Williams, publisher: Dave Shaut. The case is described at page 416, chapter 10. 2. Problem statement Par, Inc. has produced a new type of golf ball. The company wants to know if …showed first 75 words of 512 total…

…showed last 75 words of 512 total…is used which says: By filling in this formula the following equation is founded and solved to calculate the answer: Question 5 By taking a larger sample size the standard deviation would decrease and the mean point estimate would become more precise. However, in specific situation the calculated z-value is far away from the rejection area. Thus, we don't need a larger sample size. 7. Conclusion The new balls can be taken into production! Appendix 1. CurrentNew 264277 261269 267263 272266 258262 283251 258262 266289 259286 270264 263274 264266 284262 263271 260260 283281 255250 272263 266278 268264 CurrentNew 270272 287259 289264 280280 272274 275281 265276 260269 278268 275262 281283 274250 273253 263260 275270 267263 279261 274255 276263 262279