Please answer the question below

\fii) The following table gives data from a matched pairs case-control study of estrogen use as a risk factor for endometrial cancer. Controls Cases Estrogen No Estrogen Estrogen 12 43 No Estrogen 7 121 Note that the cells of the table relate to the numbers of pairs, so that there are 12 + 43 +7 + 121 = 183 pairs altogether (366 women). a) Calculate the estimated odds ratio for endometrial cancer, for estro- gen versus non-estrogen users. b) Give a 95% confidence interval for this odds ratio