A health care facility is interested in monitoring the primary C-section rate. Monthly data on the number of primary C-sections collected over the last two and a half years is shown in Table 8-25.
(a) Is the process in control?

(b) There is pressure to make these data public. Can we conclude that the C-section rates had shifted to a higher level in the last six months relative to the previous six months?
(c) What is your prediction on the C-section rate if no changes are made in current obstetrics practices?
(d) Based on benchmarking with comparable facilities in similar metropolitan areas, is it feasible currently to achieve a C-section rate of 10%?