## 10.15Optional: Tests for ORs

This question has a video solution in the online book, so you can hear and see the solution.

A study examined the choice of airway devices used for nontraumatic, out-of-hospital cardiac arrest patients, to evaluate the success and failure of insertion for various devices.

The data for success and failure at insertion is given in Table 10.5, taken from available patient documentation.

TABLE 10.5: Data from the airways study
Succeed Fail
Esophageal gastric tube airway (EGTA) 545 49
1. Define $$p$$ as the population proportion of successful attempts at insertion. Write the hypotheses to be tested.