assignment

Part 1 This enline calculator Two Independent Samples with Statistics a will help with performing hypothesis tests and calculating confsence intervals. In a study of rabati= versus radica surgery for prostatectomy in men with prostate cancer, samples of 140 men win had undergone robotic surgery and 260 men who had undergore radical surgerywere taken, The aperation time for cact surgery and the lereti of the resulting hospital stay was recorded for each man with the results summarized as follows ITewari. 2004). Operative Time 'n Minutes for Rabofic vs Radical Surgery: Suirole Mean Samal: Stad, DEV. Sample size Robulic Surgery 16 Radical Surgery 163 1:2 250 1. Perform a hwyontapeis test to determine if there is a statistically significant difference between the average operative time forrepublic and railical surgery. Make sure you state your pull and alternative hypothesis the test statistic. the P-value, youralphs lew, and your conclusion. 2. If there Is a statistically significant difference in the average operative dimes, estimate the difference with a 95% confidence interval. Length of Hospital Stay in Days for Roboticvs. Radical Surgery Sample Mean Sample S.J. Dra Sample Size Findxotic Surgery 0.7 160 Radical Surgery 3.5 260 3. Perform : hypothesis test to determine if there is a statistically significant diference between the average length of frospits stays for robotic and forlica surgey. Make ware you state your null and alterralive bypotens the lest statisti: the P.vylue. You alaba level and your core lusion 4. If they Me statistically significant difference in the average kangth of hesaltal lays, estimate the l Terence wit a 95% confidence blenval. 5. Bawe on your hypothesis tests and confidence Interwell-. pretend you are speaking witha patient and you are giving coxoxmer detions as to which surgery (obotic/radical would be better assed sally an lais data. What would you say In this patent. Assume that the patient knows matching about statelei