A correlational study looking at the relationship between alcohol consumption and driving safety with a large national sample of Australians would likely: reveal any causal relationship between drinking and driving safety allow tight experimental control over the independent variable be particularly affected by sampling error have high ecological validity

This study would likely have high ecological validity. Here's why:

1. A correlational study: This type of study is used to determine if there is a relationship between two variables, but it does not establish a cause-and-effect relationship. In this case, the study is looking at the relationship between alcohol consumption and driving safety.

2. Large national sample of Australians: This suggests that the study is being conducted on a large scale and across different regions of Australia, which increases the likelihood of the results being representative of the population.

3. The study would not reveal any causal relationship between drinking and driving safety: As mentioned earlier, a correlational study can only identify if a relationship exists between two variables, not if one causes the other.

4. The study would not allow tight experimental control over the independent variable: In this case, the independent variable is alcohol consumption, which cannot be tightly controlled in a large-scale correlational study as it would be unethical and impractical to manipulate people's alcohol consumption.

5. The study would not be particularly affected by sampling error: Given the large national sample, the chances of sampling error affecting the results are reduced.

6. High ecological validity: This refers to the extent to which the findings of a research study can be generalized to real-world settings. Given the large sample size and the real-world nature of the variables (alcohol consumption and driving safety), this study would likely have high ecological validity.