If the null and alternative hypotheses are \( H_{0}: p=0.19 \) \( H_{1}: p \neq 0.19 \) Then the test is Oleft-tailed Otwo-tailed Oright-tailed

To determine the type of test based on the null and alternative hypotheses, we need to analyze the hypotheses given: - Null Hypothesis (\( H_{0} \)): \( p = 0.19 \) - Alternative Hypothesis (\( H_{1} \)): \( p \neq 0.19 \) The alternative hypothesis states that the parameter \( p \) is not equal to 0.19. This indicates that we are interested in deviations from the null hypothesis in both directions (either greater than or less than 0.19). ### Conclusion: Since the alternative hypothesis is of the form \( p \neq 0.19 \), this indicates that the test is a **two-tailed test**. Thus, the correct answer is: - **two-tailed**