*Statistical Methods for Life and Health Sciences*

- (Project
_3_1) Use the Neonatal Survival and ECMO dataset to answer the following questions:

Note:The answers to all questions can be calculated by hand, using the Statistics Online Compute Resource SOCR, however, I do encourage you strongly to get a hold of and learn at least one statistical package for analyzing such data. Examples areSAS, Splus, STATA, SSPS, Excel, SYSTATand many others. If you do not have access to a computer/proper-software let me know and I'll set you up in the Statistics department computer laboratory.

- Was the proportion of infants with negative
BE(acid-base balance in the blood) different from the proportion of infants with positiveBE, in this study?- For the two groups,
D&L, are there statistical differences in the IMV levels (ventilation requirements)?- What is a 95% CI for the ratio of the variances of the the groups (
Dvs.L) w.r.t. the concentration of oxygen in the blood stream? How do we interpret this CI?

\Ivo D. Dinov, Ph.D., Departments of Statistics and Neurology, UCLA School of Medicine/