The Accompanying Data on Cortisol Level Was Reported in a Research

question 15

Essay

The accompanying data on cortisol level was reported in a research paper. Experimental subjects were pregnant women whose babies were delivered between 38 and 42 weeks gestation. Group 1 individuals elected to deliver by Caesarean section before labor onset, group 2 delivered by emergency Caesarean during induced labor, and group 3 individuals experienced spontaneous labor. Use the Kruskal-Wallis test at level .05 to test for equality of the three population means. $$\begin{array} { l l l l l l l } \hline \text { Group 1 } & 267 & 312 & 216 & 328 & 459 & 344 \\& 309 & 159 & 292 & 361 & & \\\text { Group 2 } & 470 & 506 & 460 & 360 & 473 & 367 \\\text { Group 3 } & 348 & 777 & 212 & 1053 & 843 & 692 \\\hline\end{array}$$

---

Definitions:

Primary Market

The market in which new issues of securities are offered to the public.

Initial Margin

The portion of the purchase price that an investor must deposit as collateral when buying on margin, to cover credit risk.

Rate of Return

The financial gain or loss encountered on an investment throughout a set period, calculated as a percentage of the investment’s initial outlay.