Do not solve just identify which equation to use for CI and

Do not solve, just identify which equation to use for CI and hypothesis.

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Wedding Costs. According to Bride\'s Magazine, getting married these days can be expensive when the costs of the reception, engagement ring, bridal gown, pictures-just to name a few-are included. A simple random sample ofj 20 recent U.S. weddings yielded the following data on wed- ding costs, in dollars 19,496 23,789 18,312 14,554 18,460 27,806 21,203 29,288 34,081 27,896 30,098 13,360 33,178 42,646 24,053 32,269 40,406 35,050 21,083 19,510 a. Use the data to obtain a point estimate for the popula- tion mean wedding cost, , of all recent US. weddings (Note: The sum of the data is $526,538.) b. Is yourpoint estimate inpart (a) likelyto equal exactly? Explain your answer Vasectomies and Prostate Cancer. App 450,000 vasectomies are performed each year in the States. In this surgical procedure for contraception the carrying sperm from the testicles is cut and tied se studies have been conducted to analyze the relationsap tween vasectomies and prostate cancer. The resu such study by E. Giovannucci et al. appeared in he \"A Retrospective Cohort Study of Vasectomy and s Cancer in U.S. Men\" Journal of the American Medic ation, Vol. 269(7), pp. 878-882). Of 21,300 men who had had a vasectomy, 69 were found to have prostate cancer 22,000 men who had had a vasectomy, 113 we have prostate cancer a. At the 1% significance level, do the data p ficient evidence to conclude that men who have vasectomy are at greater risk of having prostat study? Explain your answer reasonably conclude that having a vasectomy ca b. Is this study a designed experiment or an observao c. In view of your answers to parts (a) and (b) increased risk of prostate cancer? Explain your anek

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